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  • 51.
    Loncarevic, Semir
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Milanovic, A
    Department of Food Hygiene, Veterinary Faculty, Sarajevo, Bosnia.
    Caklovica, F
    Department of Food Hygiene, Veterinary Faculty, Sarajevo, Bosnia.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Occurrence of Listeria species in an abattoir for cattle and pigs in Bosnia and Hercegovina1994Inngår i: Acta Veterinaria Scandinavica, ISSN 1751-0147, E-ISSN 1751-0147, Vol. 35, nr 1, s. 11-15Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Altogether 496 samples of meat, lymph nodes, process water and swabs from different places in the abattoir were examined for the presence of Listeria spp. L. monocytogenes was isolated from 31 (6%) and other Listeria spp. from 65 (13%) samples L. monocytogenes was isolated from 2 of 10 beef meat samples, 4 of 50 pig meat samples and 1 of 21 lymph nodes of pigs. No Listeria bacteria were isolated from lymph nodes of cattle. The highest percentage of Listeria was recovered from the unclean sections (cattle 22% and pigs 27%) and the highest frequency was observed during the winter months.

  • 52.
    Loncarevic, Semir
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Occurrence of Listeria species in broilers pre- and post-chilling in chlorinated water at the two slaughterhouses1994Inngår i: Acta Veterinaria Scandinavica, ISSN 1751-0147, E-ISSN 1751-0147, Vol. 35, nr 2, s. 149-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Altogether 323 pooled samples of neck skins from 1615 broilers from 2 processing plants (A and B) were examined for the presence of Listeria species. The broilers were sampled pre-chilling - after leaving the final rinser but before entering the chiller with chlorinated water - and post-chilling - immediately upon leaving the chiller. Free available chlorine in the chilling water varied from 2 to 15 ppm in plant A and was about 10 ppm in plant B. Listeria monocytogenes was only isolated from broilers in plant A sampled post-chilling (58% of 62 samples). L. innocua was isolated from 19% and 39% of broilers sampled pre-chilling in plants A and B, respectively. Post-chilling, L. innocua was isolated from 3% and 6% of samples from plants A and B, respectively.

  • 53.
    Loncarevic, Semir
    et al.
    Dep of Food Hygiene, Faculty of Veterinary Medicine, SLU.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Changes in serogroup distribution  among Listeria monocytogenes human isolates in Sweden1998Inngår i: XIII International Symposium on Problems of LIsteriosis: PROGRAM AND ABSTRACTS / [ed] ISOPOL, Halifax, Nova Scotia, Canada: ISOPOL , 1998, s. 20-20Konferansepaper (Fagfellevurdert)
  • 54.
    Loncarevic, Semir
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    How to reveal all Listeria monocytogenes clones in food samples?1995Inngår i: Proceedings of the XII International Symposium on problems of listeriosis, Canning Bridge, W.A.: Promaco Conventions , 1995, s. 277-277Konferansepaper (Fagfellevurdert)
  • 55.
    Loncarevic, Semir
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Prevalence of Listeria monocytogenes and other Listeria spp. in smoked and ’’gravad’’ fish1996Inngår i: Acta Veterinaria Scandinavica, ISSN 1751-0147, E-ISSN 1751-0147, Vol. 37, nr 1, s. 13-18Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Altogether 150 samples of vacuum-packed fish were examined for the presence of listeria species. Listeria monocytogenes was isolated from 12 of 58 ''gravad'' fish samples, 3 of 26 cold-smoked and one of 66 hot-smoked fish samples. Ten of these 16 positive samples harboured more than 100 L. monocytogenes cfu/g. The highest level (132 000) was found in a sample of hot-smoked rainbow trout (Oncorhynchus mykiss). Serogroup 1/2 was most frequently found, followed by 4 and 3. One sample of gravad rainbow trout harboured more than one serogroup of L. monocytogenes. L. innocua and L. seeligeri were isolated from 12 and 1 samples, respectively.

  • 56.
    Loncarevic, Semir
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    The clones of Listeria monocytogenes detected in food depend on the method used1996Inngår i: Letters in Applied Microbiology, ISSN 0266-8254, E-ISSN 1472-765X, Vol. 22, nr 5, s. 381-384Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Restriction enzyme analysis (REA) with pulsed-field gel electrophoresis (PFGE) has been used to characterize and compare Listeria monocytogenes strains isolated from foods by two methods, an enrichment procedure and a direct plating procedure. In total 151 isolates from nine foods were investigated, In six of the foods (101 strains investigated) only one clone of L, monocytogenes was found irrespective of the method used. In three foods (50 strains investigated) the direct plating procedure yielded more clones than the enrichment procedure. At the most, five clones were detected in the same food. The results presented here indicate that direct plating from the food reveals more L, monocytogenes clones than revealed by an enrichment procedure.

  • 57.
    Lopez-Valladares, Gloria
    et al.
    School of Hospitality, Culinary Arts and Meal Science, Örebro University, Grythyttan, Sweden.
    Danielsson Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Implicated food products for listeriosis and changes in serovars of Listeria monocytogenes affecting humans in recent decades2018Inngår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 15, nr 7, s. 387-397Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Listeriosis is a foodborne disease with a high fatality rate, and infection is mostly transmitted through ready-toeat(RTE) foods contaminated with Listeria monocytogenes, such as gravad/smoked fish, soft cheeses, andsliced processed delicatessen (deli) meat. Food products/dishes stored in vacuum or in modified atmospheresand with extended refrigerator shelf lives provide an opportunity for L. monocytogenes to multiply to largenumbers toward the end of the shelf life. Elderly, pregnant women, neonates, and immunocompromisedindividuals are particularly susceptible to L. monocytogenes. Listeriosis in humans manifests primarily assepticemia, meningitis, encephalitis, gastrointestinal infection, and abortion. In the mid 1990s and early 2000s ashift from L. monocytogenes serovar 4b to serovar 1/2a causing human listeriosis occurred, and serovar 1/2a isbecoming more frequently linked to outbreaks of listeriosis, particularly in Europe and Northern America.Consumer lifestyle has changed, and less time is available for food preparation. Modern lifestyle has markedlychanged eating habits worldwide, with a consequent increased demand for RTE foods; therefore, more RTE andtake away foods are consumed. There is a concern that many Listeria outbreaks are reported from hospitals.Therefore, it is vitally important that foods (especially cooked and chilled) delivered to hospitals and residentialhomes for senior citizens and elderly people are reheated to at least 72C: cold food, such as turkey deli meatand cold-smoked and gravad salmon should be free from L. monocytogenes. Several countries have zerotolerance for RTE foods that support the growth of Listeria.

  • 58.
    Lopez-Valladares, Gloria
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Goering, Richard V.
    Med Ctr, Sch Med, Dept Med Microbiol & Immunol, Creighton Univ, Omaha CA, USA.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups2015Inngår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 12, nr 5, s. 447-453Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The 63 pulsed-field gel electrophoresis (PFGE) types identified among 427 clinical isolates of Listeria monocytogenes that were characterized in a previous study by serotyping and PFGE (AscI) could be further divided into 17 PFGE groups. While the 63 PFGE types, all part of lineage I, were established based on the number and distribution of all bands in each DNA profile, the 17 PFGE groups were based on the configuration of small bands with sizes L. monocytogenes serovar 4b isolates (n=334) were divided into 8 PFGE groups; the 32 PFGE types of serovar 1/2b isolates (n=90) and the serovar 3b isolates (n=3, 1 PFGE type) were divided into 9 PFGE groups. An association was observed between PFGE groups and serovars. L. monocytogenes isolates belonging to PFGE groups I, J, Q, R, X, Z, o-4, and o-5 all shared serovar 4b, whereas isolates from PFGE groups D, G, O, P, T, U, o-1, o-2, and o-3 shared serovar 1/2b. Small fragments L. monocytogenes isolates. From the results of the present study, a procedure for accelerating the identification of PFGE types when analyzing new PFGE profiles can be suggested. Therefore, we propose a stepwise procedure to PFGE profiling by first identifying the PFGE group using the smaller band patterns <145.5 kb, and then determining PFGE types based on the band patterns >145.5 kb.

  • 59.
    Lopez-Valladares, Gloria
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Goering, Richard V.
    Department of Medical Microbiology and Immunology, Creighton University Medical Center, School of Medicine, Omaha NE, USA.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Lineage II (Serovar 1/2a and 1/2c) Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis Types Divided into PFGE Groups Using the Band Patterns Below 145.5 kb2017Inngår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 14, nr 1, s. 8-16Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Among 504 clinical lineage II isolates of Listeria monocytogenes isolated during 1958-2010 in Sweden, 119 pulsed-field gel electrophoresis (PFGE) types (AscI) have been identified based on the number and distribution of all banding patterns in each DNA profile. In this study, these types were further divided into PFGE groups based on the configuration of small bands with sizes <145.5 kb. The 504 isolates included 483 serovar 1/2a isolates distributed into 114 PFGE types and 21 serovar 1/2c isolates distributed into 9 PFGE types; these were further divided into 21 PFGE groups. PFGE group, that is, configuration of small bands below 145.5 kb, and serovars were correlated. L. monocytogenes isolates belonging to PFGE groups A, B, C, E, F, H, K, L, M, S, V, W, Y, and Ö-6 to Ö-12 shared serovar 1/2a, with one exception. PFGE group E also included two PFGE types sharing serovar 1/2c and four PFGE types belonging to either serovar 1/2a or 1/2c. Isolates belonging to PFGE group N shared serovar 1/2c. In contrast to lineage I isolates, small fragments <33.3 kb were visible in all L. monocytogenes isolates belonging to lineage II. In the results from both the present and previous studies, the genomic region of small bands was genetically more conservative than in large bands. The distribution of these small bands established the relatedness of strains and defined a genetic marker for both lineages I and II, while also establishing their serogroup. The division of L. monocytogenes PFGE types into PFGE groups is advantageous as the profile of every new isolate can be identified easily and quickly through first studying the PFGE group affiliation of the isolate based on the smaller band patterns <145.5 kb, and then identifying the PFGE type based on the band patterns >145.5 kb.

  • 60.
    Lopez-Valladares, Gloria
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Listeria monocytogenes: a threat to the health of restaurant guests2016Inngår i: 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts / [ed] Tobias Nygren, Agneta Yngve och Åsa Öström, Örebro: Örebro University , 2016, Vol. 1, s. 35-35Konferansepaper (Fagfellevurdert)
  • 61.
    Lopez-Valladares, Gloria
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Than, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Listeriosis in South American camelids: a review2013Inngår i: Journal of Camel Practice and Research, ISSN 0971-6777, E-ISSN 2277-8934, Vol. 20, s. 129-132Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The main aim of the present study was to review the general aspects of Listeria and the clinical manifestation of the disease listeriosis in humans and domestic ruminants, with emphasis on clinical signs in South American camelids. Camelids are susceptible to infection by Listeria; however, it appears that the prevalence of listeriosis in camelids is low, given that few cases have been reported. The species Listeria monocytogenes is associated with all reported cases. To our knowledge, there are no reported cases of listeriosis in vicunas (Vicugna vicugna) and guanacos (Lama guanicoe).

    The clinical manifestations of listeriosis in llamas and alpacas are similar to in domestic ruminants and humans, namely meningoencephalitis, encephalitis, septicaemia, abortion, otitis media/interna and polyarthritis. Listerial mastitis and gastroenteritis has not yet been described in camelids. Despite reported cases, there is no specific mention of listeriosis associated with shedding of bacteria in faeces or milk. The occurrence of listeriosis in camelids needs to be confirmed and clinical signs defined.

  • 62.
    Lopez-Valladares, Gloria
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Parihar, Vishal Singh
    Örebro universitet, Institutionen för hälsovetenskap och medicin. Department of Restaurant and Culinary Arts, Örebro University, Grythyttan, Sweden.
    Helmersson, Seved
    Department of Environmental Assessment, SLU, Uppsala, Sweden.
    Andersson, Birgitta
    Department of Bacteriology, Malmö University Hospital, Malmö, Sweden.
    Ivarsson, Sofie
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Johansson, Christina
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Ringberg, Håkan
    Regional Centre for Communicable Disease Control and Prevention, Malmö, Sweden.
    Tjernberg, Ingela
    Department of Bacteriology, Malmö University Hospital, Malmö, Sweden.
    Henriques-Normark, Birgitta
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)2014Inngår i: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 142, s. 2251-2260Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Isolates of Listeria monocytogenes (n=932) isolated in Sweden during 1958–2010 from human patients with invasive listeriosis were characterized by serotyping and pulsed-field gel electrophoresis (PFGE) (AscI). Of the 932 isolates, 183 different PFGE types were identified, of which 83 were each represented by only one isolate. In all, 483 serovar 1/2a isolates were distributed over 114 PFGE types; 90 serovar 1/2b isolates gave 32 PFGE types; 21 serovar 1/2c isolates gave nine PFGE types; three serovar 3b isolates gave one PFGE type; and, 335 serovar 4b isolates gave 31 PFGE types. During the 1980s in Sweden, several serovar 4b cases were associated with the consumption of European raw soft cheese. However, as cheese-production hygiene has improved, the number of 4b cases has decreased. Since 1996, serovar 1/2a has been the dominant L. monocytogenes serovar in human listeriosis in Sweden. Therefore, based on current serovars and PFGE types, an association between human cases of listeriosis and the consumption of vacuum-packed gravad and cold-smoked salmon is suggested.

  • 63.
    Läikkö, Tina
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala; Meat and Fish Hygiene Unit, Helsinki, Finland.
    Båverud, Viveca
    Department of Bacteriology, National Veterinary Institute, Uppsala.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala.
    Fridén, S.
    Vännäs District Veterinary Station, Mariahällan, Vännäs.
    Grip Hansson, A.
    ännäs District Veterinary Station, Mariahällan, Vännäs.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala.
    Canine tinsillitis associated with Listeria monocytogenes2004Inngår i: The Veterinary Record, ISSN 0042-4900, E-ISSN 2042-7670, Vol. 154, nr 23, s. 732-732Artikkel i tidsskrift (Fagfellevurdert)
  • 64.
    Nerbrink, Eva
    et al.
    Swedish meats R & D.
    Borch, Elisabeth
    Swedish meats R & D.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Hansen, Flemming
    SF, Roskilde, Denmark.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Jämförelse av metoder för typning av Listeria monocytogenes2000Rapport (Annet vitenskapelig)
  • 65.
    Olsen, B-O
    et al.
    Dep of Food Hygiene, Faculty of Veterinary Medicine.
    Helmersson, Seved
    Dep of Food Hygiene, Faculty of Veterinary Medicine, SLU.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Characterization of Swedish food and human isolates of Listeria monocytogenes serovar 1/2c2004Inngår i: ISOPOL XV – XV International Symposium on Problems of ListeriosisUppsala, Sweden, September 12–15, 2004 / [ed] Danielsson-Tham M-L, Than W och Ericsson Henrik, Uppsala: Dep of Food Hygienew, faculty of Veterinary Medicine, SLU , 2004, s. Abstract no. 157-Konferansepaper (Fagfellevurdert)
  • 66.
    Parihar, Vishal
    et al.
    Örebro universitet, Restaurang- och hotellhögskolan.
    ingermaa, Fredrika
    Dep of Food Hygiene, Faculty of Veterinary Medicine.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Båverud, Viveca
    Department of Bacteriology, National Veterinary Institute.
    Helmersson, Seved
    Department of Food Hygiene, faculty of Veterinary Medicine.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Zoonotic aspects of Listeria monocytogenes2004Inngår i: ISOPOL XV – XV International Symposium on Problems of Listeriosis, Uppsala, Sweden, September 12–15, 2004 / [ed] Danielsson-Tham M-L, Than W och Ericsson Henrik, Uppsala, 2004, s. Abstract no. 128-Konferansepaper (Fagfellevurdert)
  • 67.
    Parihar, Vishal Singh
    et al.
    Örebro universitet, Hälsoakademin.
    Barbuddhe, Sukhadeo B.
    Chakurkar, E.B.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Institutionen för restaurang- och måltidskunskap.
    Tham, Wilhelm
    Örebro universitet, Institutionen för restaurang- och måltidskunskap.
    Isolation of Listeria species from farm bulk milk at the receiving dairy plant and cervico-vaginal swabs2007Inngår i: Indian Journal of Comparative Microbiology, Immunology and Infectious Diseases, ISSN 0974-0147, Vol. 28, nr 1/2, s. 53-55Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Listeria species were isolated from farm bulk milk (n=123) at the receiving dairy plant and cervico-vaginal samples (n=20) collected from dairy cows with reproductive disorders. Following enrichment and plating on two selective agar media, confirmation of the isolates was based on standard tests. Isolates were subjected to a PCR assay for detection of the hlyA gene. Overall, Listeria spp. were isolated from 30(24.4%) bulk milk samples and four (20%) cervico-vaginal swabs. Listeria monocytogenes was isolated from 17.9%, L. innocua from 1.6%, L. seeligeri from 3.3% and L. welshimeri from 1.6% bulk milk samples. Only L. monocytogenes (10%) and L. innocua (10%) could be isolated from cervico-vaginal swabs. The hlyA gene was detected in all L. monocytogenes isolates. These findings represent a public health risk where homemade unpasteurised milk and milk products are largely consumed.

  • 68.
    Parihar, Vishal Singh
    et al.
    Örebro universitet, Hälsoakademin.
    Barbuddhe, Sukhadeo B.
    Kalorey, Dewanand R.
    Khandait, Vinod Y.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Isolation of Listeria monocytogenes from human clinical cases in IndiaManuskript (preprint) (Annet vitenskapelig)
  • 69.
    Parihar, Vishal Singh
    et al.
    Örebro universitet, Hälsoakademin.
    Barbuddhe, Sukhadeo
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Isolation and characterization of Listeria species from tropical seafoods2008Inngår i: Food Control, ISSN 0956-7135, E-ISSN 1873-7129, Vol. 19, nr 6, s. 566-569Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The incidence of Listeria species in the seafood of markets in Goa, India was studied. One hundred and fifteen raw/fresh seafoods bought at the fish markets were sampled and tested for presence of Listeria spp. using a two step enrichment procedure, followed by plating on two selective agars. The confirmation of the isolates was based on biochemical identification. Twenty eight seafood samples were positive for Listeria spp. and in 10 samples Listeria monocytogenes was detected. L.innocua was the most common Listeria species recovered and was detected in 18 samples. L. monocytogenes in raw seafood may pose a health risk in kitchen if contaminating ready-to-eat food.

  • 70.
    Parihar, Vishal Singh
    et al.
    Örebro universitet, Hälsoakademin.
    Lopez-Valladares, G.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan.
    Helmersson, S.
    Barbuddhe, Sukhadeo B.
    Båverud, V.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Molecular characterisation of Listeria monocytogenes isolates from animals in Sweden and comparison with previously characterised human strainsManuskript (preprint) (Annet vitenskapelig)
  • 71.
    Parihar, Vishal Singh
    et al.
    Örebro universitet, Institutionen för restaurang- och måltidskunskap. Department of Clinical Medicine, Örebro University Hospital, Örebro, Sweden.
    Lopez-Valladares, Gloria
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Peiris, Inoka
    Helmersson, Seved
    Department of Environmental Assessment, SLU, Uppsala, Sweden.
    Unemo, Magnus
    Örebro universitet, Hälsoakademin. Department of Clinical Microbiology, Örebro University Hospital, Örebro, Sweden.
    Andersson, Birgitta
    Department of Bacteriology, Malmö University Hospital, Malmö, Sweden.
    Arneborn, Malin
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Bannerman, Elizabeth
    Centre National des Listeria, Institut de Microbiologie, Lausanne, Switzerland.
    Barbuddhe, Sukhadeo
    ICAR Research Complex for Goa, Old Goa, India.
    Bille, Jacques
    Centre National des Listeria, Institut de Microbiologie, Lausanne, Switzerland.
    Hajdu, Lajos
    AstraZeneca AB, Södertälje, Sweden.
    Jacquet, Christine
    Laboratoire des Listeria, Institut Pasteur, Paris, France.
    Johansson, Christina
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Löfdahl, Margareta
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Möllerberg, Gunnel
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Ringberg, Håkan
    Regional Centre for Communicable Disease Control and Prevention, Malmö, Sweden.
    Rocourt, Jocelyne
    Centre Pasteur du Cameroun, Yaounde, Cameroon.
    Tjernberg, Ingela
    Department of Bacteriology, Malmö University Hospital, Malmö, Sweden.
    Ursing, Jan
    Department of Bacteriology, Malmö University Hospital, Malmö, Sweden.
    Henriques-Normark, Birgitta
    The Swedish Institute for Infectious Disease Control and MTC, Karolinska Institutet, Solna, Sweden.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi. Department of Restaurant and Culinary Arts, Örebro University, Grythyttan, Sweden.
    Characterization of human invasive isolates of Listeria monocytogenes in Sweden 1986-20072008Inngår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 5, nr 6, s. 755-761Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Since 1986, 68% of the Listeria monocytogenes isolates from human cases of invasive listeriosis in Sweden are available for retrospective studies. The aim of the present study was to characterize 601 human invasive isolates of L. monocytogenes in Sweden from 1986 to 2007 by using serotyping and pulsed-field gel electrophoresis. Since 1996, serovar 4b was permanently reduced to the second or third most common serovar in human cases in Sweden. During the latter period, 2000-2007, only 13% belonged to serovar 4b and 71% to 1/2a. The dendrogram, based on pulsovars, reveals two clusters with different serovars. Cluster 1 exhibits serovars 4b and 1/2b, whereas cluster 2 consists of serovar 1/2a. Serovar 1/2a seems to be more heterogeneous than serovar 4b.

  • 72.
    Pauly, T.M.
    et al.
    Swedish University of Agricultural Sciences (SLU), Department of Animal Nutrition and Management Kungsängen Research Centre, Uppsala, Sweden.
    Hansson, Inger B
    Swedish University of Agricultural Sciences (SLU), Department of Food Hygiene, Uppsala, Sweden.
    Tham, Wilhelm
    Swedish University of Agricultural Sciences (SLU), Department of Food Hygiene, Uppsala, Sweden.
    The effect of mechanical forage treatments on the growth of Clostridium tyrobutyricum and Listeria monocytogenes in grass silage1999Inngår i: Animal Feed Science and Technology, ISSN 0377-8401, E-ISSN 1873-2216, Vol. 78, nr 1-2, s. 127-139Artikkel i tidsskrift (Fagfellevurdert)
  • 73.
    Pauly, T.M.
    et al.
    Department of Animal Nutrition & Management, SLU, Uppsala.
    Tham, Wilhelm
    Department of Food Hygiene, Swedish University of Agricultural Sciences (SLU), Uppsala.
    Survival of Listeria monocytogenes in wilted and additive-treated grass silage2003Inngår i: Acta Veterinaria Scandinavica, ISSN 1751-0147, E-ISSN 1751-0147, Vol. 44, s. 73-86Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Grass was field-dried to 3 different dry matter (DM) levels (200, 430 and 540 g/kg) and inoculated with 106-107 cfu/g of a Listeria monocytogenes strain sharing a phagovar occasionally involved in foodborne outbreaks of listeriosis. Formic acid (3 ml/kg) or lactic acid bacteria (8·105/g) with cellulolytic enzymes were applied only to forages with low and intermediate DM levels. Forages were ensiled in laboratory silos (1700 ml) and were stored at 25°C for 30 or 90 days. After 90 days of storage, L. monocytogenes could not be detected in any silo, except one with the high dry matter grass without additive. After 30 days of storage, between 102 and 106 cfu L. monocytogenes/g silage were isolated from the untreated silages. Increasing the DM content from 200 to 540 g/kg did not reduce listeriacounts possibly because of the lower production of fermentation acids (higher pH). In silages treated with additives, counts of L. monocytogenes were always lower than in silages without additive. In wet silages (DM 200 g/kg) both additives were effective, but in the wilted silages (DM 430 g/kg) only the bacterial additive reduced listeria counts below detection level. Listeria counts were highly correlated to silage pH (r = 0.92), the concentration of lactic acid (r = -0.80) and the pooled amount of undissociated acids (r = -0.83).

  • 74.
    Peiris, Inoka Priyadarshani
    et al.
    Restaurang- och hotellhögskolan - Grythytte akademi, School of Hospitality, Culinary Arts & Meal Science.
    Lopez-Valladares, Gloria
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Parihar, Vishal Singh
    Örebro universitet, Hälsoakademin.
    Helmersson, Seved
    Barbuddhe, Sukdevo
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Gravad (Gravlax) and cold-smoked salmon, still a potential source of listeriosis2009Inngår i: Journal of Foodservice, ISSN 1748-0140, Vol. 20, nr 1, s. 15-20Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Gravad (Gravlax) and cold-smoked salmon are associated with human listeriosis in Sweden. The present investigation of Listeria monocytogenes in salmon was a follow-up of a similar study in the middle of the 1990s. Since our first study, there has been an increasing focus on food hygiene in general and specially on self-inspection and Hazard Analysis and Critical Control Points from the authorities and food producers. L. monocytogenes was isolated from 11 (three manufacturers) of the 56 products analyzed. The highest level of L. monocytogenes was 1500 cfu/g from a cold-smoked salmon product; however, the level was low (<100 cfu/g) in most products. Serovar 1/2a was predominant, followed by 4b. restriction enzyme analysis/ pulsed-field gel electrophoresis typing of the 56 salmon isolates identified five types of L. monocytogenes. One type was identical to a human type, whereas two other were closely related. These findings suggest that gravad and coldsmoked salmon are still possible sources of listeriosis in Sweden.

  • 75.
    Rantajärvi, Pekka
    et al.
    Pfizer Oy Animal Health, Helsinki, Finland.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Danielsson-Tham, Marie-Louise
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Listeria monocytogenes – en 100-årig svensk upptäckt?2010Inngår i: Svensk veterinärtidning, ISSN 0346-2250, nr 16, s. 21-25Artikkel i tidsskrift (Fagfellevurdert)
  • 76.
    Skovbjerg, Susann
    et al.
    Inst Biomed, Dept Infect Med Clin Bacteriol,Univ Gothenburg, Gothenburg, Sweden.
    Martner, Anna
    Inst Biomed, Dept Infect Med Clin Bacteriol, Univ Gothenburg, Gothenburg, Sweden.
    Hynsjö, Lars
    Inst Biomed, Dept Clin Chem & Transfus Med, Univ Gothenburg, Gothenburg, Sweden.
    Hessle, Christina
    Inst Biomed, Dept Infect Med Clin Bacteriol, Univ Gothenburg, Gothenburg, Sweden.
    Olsen, Ingar
    Inst Oral Biol, Fac Dent, Univ Oslo, Oslo, Norway.
    Dewhirst, Floyd E.
    Sch Dent Med, Harvard Univ, Boston MA, USA.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Wold, Agnes E.
    Inst Biomed, Dept Infect Med Clin Bacteriol, Univ Gothenburg, Gothenburg, Sweden.
    Gram-Positive and Gram-Negative Bacteria Induce Different Patterns of Cytokine Production in Human Mononuclear Cells Irrespective of Taxonomic Relatedness2010Inngår i: Journal of Interferon and Cytokine Research, ISSN 1079-9907, E-ISSN 1557-7465, Vol. 30, nr 1, s. 23-32Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Upon bacterial stimulation, tissue macrophages produce a variety of cytokines that orchestrate the immune response that clears the infection. We have shown that Gram-positives induce higher levels of interleukin-12 (IL-12), interferon-γ (IFN-γ), and tumor necrosis factor (TNF) from human peripheral blood mononuclear cells (PBMCs) than do Gram-negatives, which instead induce more of IL-6, IL-8, and IL-10. Here, we study whether these patterns follows or crosses taxonomic borders. PBMCs from blood donors were incubated with UV-inactivated bacteria representing 37 species from five phyla. IL-12, TNF, IL-1β, IL-6, IL-8, and IL-10 were measured in the supernatants after 24 h and IFN-γ after 5 days. Irrespective of phylogenetic position, Gram-positive bacteria induced much more IL-12 (nine times more on average) and IFN-γ (seven times), more TNF (three times), and slightly more IL-1β (1.5 times) than did Gram-negatives, which instead induced more IL-6 (1.5 times), IL-8 (1.9 times), and IL-10 (3.3 times) than did Gram-positives. A notable exception was the Gram-positive Listeria monocytogenes, which induced very little IL-12, IFN-γ, and TNF. The results confirm the fundamental difference in innate immune responses to Gram-positive and Gram-negative bacteria, which crosses taxonomic borders and probably reflects differences in cell wall structure.

  • 77.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Att vara vegetarian2010Inngår i: Guide till Årets svenska måltidslitteratur 2010 / [ed] Carl Jan Granqvist, Birgit Hemberg, Christina Möller, Dick Norberg, Barbro Stanley, Karsten Thurfjell, Ann Häppich, Grythyttan: Måltidsakademiens förlag i Grythyttan AB , 2010, s. 41-41Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 78.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Chemoterapeutic residues food1986Inngår i: IVSA Newsletter – The Official Journal of the International Veterinary Student Association, Vol. 8, nr 1, s. 13-13Artikkel i tidsskrift (Annet vitenskapelig)
  • 79.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    En utvärderad overklighet2004Inngår i: Svensk veterinärtidning, ISSN 0346-2250, Vol. 56, nr 2, s. 53-53Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 80.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Grönsaker och rotfrukter i ett bondehem på 1930-talet2014Inngår i: Guide till årets svenska måltidslitteratiur 2014 / [ed] Carl Jan Granqvist, Birgit Hemberg, Tomas Lidman, Christina Mattsson, Christina Möller, Dick Norberg, Kartsen Thurfjell, Grythyttan: Måltidsakademien förlag i Grythyttan AB , 2014, s. 155-156Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 81.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Hantverksmässig tillverkning av getost1984Inngår i: SLU-ringen (personaltidning för Sveriges lantbruksuniversitet och SVA), ISSN 0348-2693, nr februari, s. 30-32Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 82.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Histamine formation by enterococci isolated from home-made goat cheeses1988Inngår i: International Journal of Food Microbiology, ISSN 0168-1605, E-ISSN 1879-3460, Vol. 7, nr 2, s. 103-108Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A survey was made of the histamine-producing capability of enterococci isolated from goat cheeses. The strains, 130 Streptococcus faecium and 106 S. faecalis, were grown in Trypticase Soy Broth Histidine medium (TSBH) at 35°C for 24 h and the histamine formed was determined by fluorometry. Forty-one (31.5%) of the S. faecium strains and 2 (1.9%) of the S. faecalis strains produced histamine. The largest amount detected was 4.0 μg histamine/ml TSBH. Compared with the amounts of histamine produced by some Gram-negative bacteria, the histamine production by enterococci seems to be low. Under the present conditions the enterococci seem to have no relevance from a histamine intoxication point of view.

  • 83.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala.
    How to succeed with the isolation of relevant strains of Listeria monocytogenes1995Inngår i: IDF/ISO/AOAC International – Microbiological week 1995, 1995, s. 6-6Konferansepaper (Fagfellevurdert)
  • 84.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Listeriabakterie frodas i kylskåp1988Inngår i: Dagens Nyheter, ISSN 1101-2447, nr Lördag 12 mars, s. 6-6Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 85.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Listeriosutbrott i Frankrike 19921993Inngår i: Allmänt veterinärmöte 1993, Sammanställning av föredrag / [ed] Johan Beck-Friis, 1993, s. 182-183Konferansepaper (Annet vitenskapelig)
  • 86.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Milk and milk products: Detection of Listeria monocytogenes1995Inngår i: International IDF standard, nr 143A, s. 1-8Artikkel i tidsskrift (Fagfellevurdert)
  • 87.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.
    Paying guests2011Inngår i: Guide till årets svenska måltidslitteratur 2011 / [ed] Carl Jan Granqvist, Birgit Hemberg, Christina Möller, Dick Norberg, Barbro Stanley, Karsten Thurfjell, Ann Häppich, Grythyttan: Måltidsakademiens förlag i Grythyttan AB , 2011, s. 37-38Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 88.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala, Sweden.
    PM angående utredning av listerios hos husdjur1993Annet (Annet vitenskapelig)
  • 89.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Skolmåltider2013Inngår i: GUIDE till Årets Svenska Måltidslitteratur 2013 / [ed] Carl Jan Granqvist, Birgit Hemberg, Christina Möller, Dick Norberg, Barbro Stanley, Karsten Thurfjell, Ann Häppich, Grythyttan: Måltidsakademiens förlag i Grythyttan AB , 2013, s. 52-53Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 90.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Survival of Listeria monocytogenes in cheese made of unpasteurized goat milk1988Inngår i: Acta Veterinaria Scandinavica, ISSN 1751-0147, E-ISSN 1751-0147, Vol. 29, nr 2, s. 165-172Artikkel i tidsskrift (Fagfellevurdert)
  • 91.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Svar på öppet brev från Ulrik Dige1989Inngår i: Fårskötsel, ISSN 0014-8598, nr 12, s. 27-27Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 92.
    Tham, Wilhelm
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Säkra livsmedel till konsumenterna!2004Inngår i: Professorsinstallation: Ultuna Uppsala – 1_2 April 2004, Sveriges lantbruksuniversitet , 2004, s. 72-75Kapittel i bok, del av antologi (Fagfellevurdert)
  • 93.
    Tham, Wilhelm
    Örebro universitet, Restaurang- och hotellhögskolan.
    Tjänstemannamiddagar: några minnesbilder2012Inngår i: Guide till årets svenska måltidslitteratur 2012 / [ed] Carl Jan Granqvist, Birgit Hemberg, Christina Möller, Dick Norberg, Barbro Stanley, Karsten Thurfjell, Ann Häppich, Grythyttan: Måltidsakademiens förlag i Grythyttan AB , 2012, s. 58-59Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 94.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Uppsala, Sweden.
    Aldén, J.
    Communicable Disease Control Unit, Falun, Sweden .
    Ericsson, Henrik
    Department of Food Hygiene, Uppsala, Sweden .
    Helmersson, Seved
    Department of Food Hygiene, Uppsala, Sweden .
    Malmodin, B.
    Department of Clinical Medicine, County Hospital Falun, Falun, Sweden .
    Nyberg, O.
    Department of Clinical Microbiology, County Hospital Falun, Falun, Sweden .
    Pettersson, A.
    Department of Clinical Microbiology, County Hospital Falun, Falun, Sweden .
    Unnerstad, Helle
    Department of Food Hygiene, Uppsala, Sweden .
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Uppsala, Sweden.
    A listeriosis patient infected with two different Listeria monocytogenes strains2002Inngår i: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 128, nr 1, s. 105-106Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Normally, only one isolate of Listeria monocytogenes from a case of listeriosis is subjected to characterization. Here we show that two isolates from different sites of the body were not the same strain. Such a phenomenon may not have any clinical relevance, although it may confuse the epidemiologist trying to match infection source with infection target.

  • 95.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Bannerman, Elisabeth
    Ctr. Hosp. Universitaire Vaudois, Lausanne, Switzerland .
    Bille, Jacques
    Ctr. Hosp. Universitaire Vaudois, Lausanne, Switzerland .
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Eld, Karin
    National Veterinary Institute, Uppsala, Sweden.
    Ericsson, Henrik
    Faculty of Veterinary Medicine, Swed. Univ. of Agricultural Science, Uppsala, Sweden .
    Gavier-Widén, Dolores
    National Veterinary Institute, Uppsala, Sweden.
    Rocourt, Jocelyne
    Institut Pasteur, Paris, France .
    Mörner, Torsten
    National Veterinary Institute, Uppsala, Sweden.
    Listeria monocytogenes subtypes associated with mortality among fallow deer  (Dama dama)1999Inngår i: Journal of zoo and wildlife medicine, ISSN 1042-7260, E-ISSN 1937-2825, Vol. 30, nr 4, s. 545-549Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Different subtypes of Listeria monocytogenes were isolated from various animal and environmental samples during an episode of increased mortality on a fallow deer (Dama dama) farm. During a 4-wk period, six fallow deer died, including four does, one fawn, and one adult buck. Prior to death, one of the does had exhibited central nervous system signs characteristic of listeriosis. Postmortem examination of the six deer showed no histologic changes typical of listeriosis, although inflammatory changes were present in several organs. Different subtypes of L. monocytogenes were isolated from brain samples from six deer, from fodder and soil from the deer feeding area, and from faces of some healthy animals on the farm. Listeria monocytogenes, which was frequently isolated in the environment of the farm, was considered the probable major cause of mortality in these fallow deer.

  • 96.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Bannerman, Elisabeth
    Centre National des Listeria, Institut de Microbiologi, Lausanne, Switzerland.
    Bille, Jacques
    Centre National des Listeria, Institut de Microbiologi, Lausanne, Switzerland.
    Danielsson-Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Ericsson, Henrik
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala, Sweden.
    Helmersson, Seved
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala, Sweden.
    Henriques, Birgitta
    Swedish Institute for Infectious Disease Control, Solna, Sweden.
    Christina, Jacquet
    Laboratoire des Listeria, Institut Pasteur, Paris, France.
    Loncarevic, Semir
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala, Sweden.
    Rocourt, Jocelyne
    Laboratoire des Listeria, Institut Pasteur, Paris, France.
    Unnerstad, Helle
    Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala, Sweden.
    Ursing, Jan
    Dep of Clinical Microbiology, University of Lund, General Hospital, Malmö, Sweden.
    Swedish human cases of Listeriosis, 1958–1999: Visulized by LEGO Bricks2000Inngår i: Nordic PFGE meeting January 27–28, 2000. Collection of abstracts. Department of Food Hygiene, Faculty of Veterinary Medicine, SLU, Uppsala / [ed] Marie-Louise Danielsson-Tham , Wilhelm Tham, Uppsala: Dep of Food Hygiene, Faculty of Veterinary Medicine, SLU , 2000, s. 27-27Konferansepaper (Fagfellevurdert)
  • 97.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Epdemiology of listeriosis in Sweden1991Inngår i: 8th World Congress of Food Science and Technology,Program and AbstractsToronto, Canada, September 29–October 4, 1991 / [ed] Canadian Institute of Food Science and Technology/International Union of Food Science and Technology, 1991, s. 226-226, artikkel-id P198Konferansepaper (Fagfellevurdert)
  • 98.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Listeria monocytogenes: an obscure food-borne pathogen1988Inngår i: Food Laboratory Newsletter, ISSN 0282-1338, nr 11, s. 41-43Artikkel i tidsskrift (Fagfellevurdert)
  • 99.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Listeria monocytogenes: en livsmedelsburen patogen?1989Inngår i: Svensk veterinärtidning, ISSN 0346-2250, Vol. 41, nr 8/9, s. 527-530Artikkel i tidsskrift (Fagfellevurdert)
  • 100.
    Tham, Wilhelm
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Danielsson Tham, Marie-Louise
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Listeria monocytogenes isolated from soft cheese1988Inngår i: The Veterinary Record, ISSN 0042-4900, E-ISSN 2042-7670, Vol. 122, nr 22, s. 539-540Artikkel i tidsskrift (Fagfellevurdert)
123 51 - 100 of 148
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