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Lopez-Valladares, G., Danielsson Tham, M.-L. & Tham, W. (2018). Implicated food products for listeriosis and changes in serovars of Listeria monocytogenes affecting humans in recent decades. Foodborne pathogens and disease, 15(7), 387-397
Öppna denna publikation i ny flik eller fönster >>Implicated food products for listeriosis and changes in serovars of Listeria monocytogenes affecting humans in recent decades
2018 (Engelska)Ingår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 15, nr 7, s. 387-397Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
Mary Ann Liebert, 2018
Nyckelord
serovar, RTE foods, hospital, listeriosis
Nationell ämneskategori
Livsmedelsvetenskap
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-67759 (URN)10.1089/fpd.2017.2419 (DOI)000437227500001 ()29958028 (PubMedID)
Tillgänglig från: 2018-07-07 Skapad: 2018-07-07 Senast uppdaterad: 2018-07-23Bibliografiskt granskad
Lopez-Valladares, G., Danielsson-Tham, M.-L., Goering, R. V. & Tham, W. (2017). 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 kb. Foodborne pathogens and disease, 14(1), 8-16
Öppna denna publikation i ny flik eller fönster >>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 kb
2017 (Engelska)Ingår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 14, nr 1, s. 8-16Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
New Rochelle, USA: Mary Ann Liebert, 2017
Nyckelord
PFGE type, PFGE group, Listeria monocytogenes, serovar, lineage II
Nationell ämneskategori
Genetik Livsmedelsvetenskap
Identifikatorer
urn:nbn:se:oru:diva-53597 (URN)10.1089/fpd.2016.2173 (DOI)000391818800002 ()27860487 (PubMedID)2-s2.0-85009260194 (Scopus ID)
Anmärkning

Funding Agency:

Stiftelsen Grythytte Akademi Stipendiefond

Tillgänglig från: 2016-11-21 Skapad: 2016-11-21 Senast uppdaterad: 2018-07-28Bibliografiskt granskad
Westling, M., Danielsson Tham, M.-L., Jass, J., Nilsen, A., Öström, Å. & Tham, W. (2016). Contribution of Enterobacteriaceae to Sensory Characteristics in Soft Cheeses Made from Raw Milk. Paper presented at 9th International Conference on Predictive Modelling in Food, Rio de Janeiro, Brazil, September 8-12, 2015. Procedia Food Science, 7, 17-20
Öppna denna publikation i ny flik eller fönster >>Contribution of Enterobacteriaceae to Sensory Characteristics in Soft Cheeses Made from Raw Milk
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2016 (Engelska)Ingår i: Procedia Food Science, ISSN 2211-601X, E-ISSN 2211-601X, Vol. 7, s. 17-20Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Microbiological and sensory methods were used to analyze 22 soft cheeses, of which 19 were made from raw milk, one was made from both raw and pasteurized milk and two were made from pasteurized milk. Moderate correlations (r-value 0.5–0.6 and p-value <0.01–0.05) were found between the levels of Enterobacteriaceae 37°C and the intensity of the sensory characteristics “bitter”, “metallic”, “pungent”, “manure” and “ammonia”. The present study indicates that it is possible to predict high levels of Enterobacteriaceae in soft cheeses made from raw milk using only the human senses (odor and taste).

Ort, förlag, år, upplaga, sidor
Amsterdam, Netherlands: Elsevier, 2016
Nyckelord
Soft cheeses, pasteurization, sensory profile, Enterobacteriaceae, raw milk
Nationell ämneskategori
Livsmedelsteknik
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-51663 (URN)10.1016/j.profoo.2016.02.075 (DOI)000386627900005 ()
Konferens
9th International Conference on Predictive Modelling in Food, Rio de Janeiro, Brazil, September 8-12, 2015
Forskningsfinansiär
Science for Life Laboratory - a national resource center for high-throughput molecular bioscience
Tillgänglig från: 2016-08-15 Skapad: 2016-08-15 Senast uppdaterad: 2019-03-26Bibliografiskt granskad
Danielsson-Tham, M.-L. & Tham, W. (2016). Is food hygiene a part of culinary arts and meal science?. In: Tobias Nygren, Agneta Yngve och Åsa Öström (Ed.), 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts. Paper presented at 1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 17-18 March, 2016 (pp. 28-28). Örebro: Örebro University, 1
Öppna denna publikation i ny flik eller fönster >>Is food hygiene a part of culinary arts and meal science?
2016 (Engelska)Ingår 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. 28-28Konferensbidrag, Enbart muntlig presentation (Refereegranskat)
Ort, förlag, år, upplaga, sidor
Örebro: Örebro University, 2016
Nationell ämneskategori
Medicin och hälsovetenskap Näringslära
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-49449 (URN)
Konferens
1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 17-18 March, 2016
Tillgänglig från: 2016-03-22 Skapad: 2016-03-22 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
Lopez-Valladares, G., Danielsson-Tham, M.-L. & Tham, W. (2016). Listeria monocytogenes: a threat to the health of restaurant guests. In: Tobias Nygren, Agneta Yngve och Åsa Öström (Ed.), 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts. Paper presented at 1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 18 March, 2016 (pp. 35-35). Örebro: Örebro University, 1
Öppna denna publikation i ny flik eller fönster >>Listeria monocytogenes: a threat to the health of restaurant guests
2016 (Engelska)Ingår 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. 35-35Konferensbidrag, Poster (med eller utan abstract) (Refereegranskat)
Ort, förlag, år, upplaga, sidor
Örebro: Örebro University, 2016
Nationell ämneskategori
Medicin och hälsovetenskap Näringslära
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-49450 (URN)
Konferens
1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 18 March, 2016
Tillgänglig från: 2016-03-22 Skapad: 2016-03-22 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
Lopez-Valladares, G., Danielsson-Tham, M.-L., Goering, R. V. & Tham, W. (2015). Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups. Foodborne pathogens and disease, 12(5), 447-453
Öppna denna publikation i ny flik eller fönster >>Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups
2015 (Engelska)Ingår i: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 12, nr 5, s. 447-453Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
Mary Ann Liebert, 2015
Nationell ämneskategori
Övrig annan samhällsvetenskap
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-44674 (URN)10.1089/fpd.2014.1880 (DOI)000353777800010 ()25803595 (PubMedID)
Anmärkning

Funding Agency:

Stiftelsen Grythytte Akademi Stipendiefond

Tillgänglig från: 2015-05-22 Skapad: 2015-05-22 Senast uppdaterad: 2018-06-30Bibliografiskt granskad
Tham, W. & Danielsson-Tham, M.-L. (2015). Listeria och Erysipelothrix (1ed.). In: Annelie Brauner, Staffan Arvidsson, Jonas Blomberg, Birgitta Castor, Kerstin Falk, Klas Kärre, Annika Linde, Monica Thelestam (Ed.), Medicinsk mikrobiologi & immunologi: (pp. 210-214). Lund: Studentlitteratur AB
Öppna denna publikation i ny flik eller fönster >>Listeria och Erysipelothrix
2015 (Svenska)Ingår i: Medicinsk mikrobiologi & immunologi / [ed] Annelie Brauner, Staffan Arvidsson, Jonas Blomberg, Birgitta Castor, Kerstin Falk, Klas Kärre, Annika Linde, Monica Thelestam, Lund: Studentlitteratur AB, 2015, 1, s. 210-214Kapitel i bok, del av antologi (Refereegranskat)
Abstract [sv]

Släktena Listeria och Erysipelothrix hör till gruppen grampositiva, icke-sporbildande regelbundet formade stavar. Gruppen är mycket heterogen och inkluderar både patogena och apatogena bakterier.

Ort, förlag, år, upplaga, sidor
Lund: Studentlitteratur AB, 2015 Upplaga: 1
Nationell ämneskategori
Samhällsvetenskap
Forskningsämne
Måltidskunskap; Mikrobiologi
Identifikatorer
urn:nbn:se:oru:diva-42868 (URN)978-91-44-03868-1 (ISBN)
Tillgänglig från: 2015-02-19 Skapad: 2015-02-19 Senast uppdaterad: 2017-10-18Bibliografiskt granskad
Tham, W. & Danielsson-Tham, M.-L. (2014). Food Associated Pathogens. Boca Raton London New York: Taylor & Francis Group
Öppna denna publikation i ny flik eller fönster >>Food Associated Pathogens
2014 (Engelska)Bok (Refereegranskat)
Abstract [en]

To stem the tide of food-borne illnesses, it is important to understand the source of the problem. This volume examines pathogenic bacteria, viruses, protozoan parasites, moulds, and mycotoxins in food. It discusses food-associated antimicrobial resistance and lessons learned from an actual food-borne outbreak. The book also explores clinical aspects of food-borne illness. The book is intended for medical science students. It will also be useful as a reference book for scientists, technologists, and inspectors in public health-related fields who regularly deal with issues related to food microbiology, food-borne infections and intoxications, and food safety.

 

Ort, förlag, år, upplaga, sidor
Boca Raton London New York: Taylor & Francis Group, 2014. s. 346
Nationell ämneskategori
Samhällsvetenskap
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-31903 (URN)978-1-4665-8498-3 (ISBN)
Tillgänglig från: 2013-10-12 Skapad: 2013-10-12 Senast uppdaterad: 2017-10-18Bibliografiskt granskad
Tham, W. (2014). Grönsaker och rotfrukter i ett bondehem på 1930-talet. In: Carl Jan Granqvist, Birgit Hemberg, Tomas Lidman, Christina Mattsson, Christina Möller, Dick Norberg, Kartsen Thurfjell (Ed.), Guide till årets svenska måltidslitteratiur 2014: (pp. 155-156). Grythyttan: Måltidsakademien förlag i Grythyttan AB
Öppna denna publikation i ny flik eller fönster >>Grönsaker och rotfrukter i ett bondehem på 1930-talet
2014 (Svenska)Ingår 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. 155-156Kapitel i bok, del av antologi (Övrig (populärvetenskap, debatt, mm))
Ort, förlag, år, upplaga, sidor
Grythyttan: Måltidsakademien förlag i Grythyttan AB, 2014
Serie
Årets svenska måltidslitteratur, ISSN 1652-2745
Nationell ämneskategori
Samhällsvetenskap
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-40070 (URN)
Tillgänglig från: 2014-12-30 Skapad: 2014-12-30 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
Lopez-Valladares, G., Tham, W., Parihar, V. S., Helmersson, S., Andersson, B., Ivarsson, S., . . . Danielsson-Tham, M.-L. (2014). Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010). Epidemiology and Infection, 142, 2251-2260
Öppna denna publikation i ny flik eller fönster >>Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)
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2014 (Engelska)Ingår i: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 142, s. 2251-2260Artikel i tidskrift (Refereegranskat) Published
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.

Nyckelord
Cheese, Listeria monocytogenes, PFGE, serotyping, salmon
Nationell ämneskategori
Arbetsmedicin och miljömedicin
Forskningsämne
Måltidskunskap
Identifikatorer
urn:nbn:se:oru:diva-40067 (URN)10.1017/S0950268813003385 (DOI)000344921000003 ()24480252 (PubMedID)2-s2.0-84909991349 (Scopus ID)
Anmärkning

Funding Agency:

Research Foundation of Ivar and Elsa Sandberg 

Tillgänglig från: 2014-12-30 Skapad: 2014-12-30 Senast uppdaterad: 2018-01-11Bibliografiskt granskad
Organisationer
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0001-6903-5322

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