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Danielsson Tham, Marie-LouiseORCID iD iconorcid.org/0000-0003-0154-9452
Alternative names
Publications (10 of 344) Show all publications
Lee, S., Tham, W., Danielsson Tham, M.-L., Lopez-Valladares, G., Chen, Y., Brown, P. & Kathariou, S. (2023). Draft Genome Sequences of Heavy Metal-Resistant Listeria monocytogenes Strains of Sequence Type 14 (Clonal Complex 14) from Human Listeriosis Cases in Sweden. Microbiology Resource Announcements, 12(8), Article ID e0040623.
Open this publication in new window or tab >>Draft Genome Sequences of Heavy Metal-Resistant Listeria monocytogenes Strains of Sequence Type 14 (Clonal Complex 14) from Human Listeriosis Cases in Sweden
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2023 (English)In: Microbiology Resource Announcements, E-ISSN 2576-098X, Vol. 12, no 8, article id e0040623Article in journal (Refereed) Published
Abstract [en]

Listeria monocytogenes of clonal complex 14 (CC14) is a potentially hypervirulent clone of serotype 1/2a but remains poorly characterized. We report the genome sequences of five sequence type 14 (ST14) (CC14) strains from human listeriosis cases in Sweden, which harbor a chromosomal heavy metal resistance island that is generally uncommon in serotype 1/2a.

Place, publisher, year, edition, pages
American Society for Microbiology, 2023
National Category
Microbiology
Identifiers
urn:nbn:se:oru:diva-107071 (URN)10.1128/mra.00406-23 (DOI)001025289800001 ()37428076 (PubMedID)2-s2.0-85170425815 (Scopus ID)
Note

Funding agencies:

National Alliance for Food Safety and Security grant (USDA) 2018-07464

United States Department of Agriculture (USDA)

National Research Foundation of Korea NRF-2020R1F1A1064262

 

Available from: 2023-07-11 Created: 2023-07-11 Last updated: 2023-12-08Bibliographically approved
Ennart, H. & Danielsson Tham (intervjoubjekt), M.-L. (2023). Ehec-fallen ökar  – ändå sprids recept på blodiga hamburgare. Svenska Dagbladet (12 mars), pp. 32-33
Open this publication in new window or tab >>Ehec-fallen ökar  – ändå sprids recept på blodiga hamburgare
2023 (Swedish)In: Svenska Dagbladet, ISSN 1101-2412, no 12 mars, p. 32-33Article in journal, News item (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
Hb Svenska dagbladets AB & Co, 2023
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) Social Sciences Interdisciplinary
Research subject
Microbiology
Identifiers
urn:nbn:se:oru:diva-105608 (URN)
Available from: 2023-04-20 Created: 2023-04-20 Last updated: 2023-04-20Bibliographically approved
Brown, P., Lee, S., Elhanafi, D., Tham, W., Danielsson Tham, M.-L., Lopez-Valladares, G., . . . Kathariou, S. (2023). Investigation of a Listeria monocytogenes Chromosomal Immigration Control Region Reveals Diverse Restriction Modification Systems with Complete Sequence Type Conservation. Microorganisms, 11(3), Article ID 699.
Open this publication in new window or tab >>Investigation of a Listeria monocytogenes Chromosomal Immigration Control Region Reveals Diverse Restriction Modification Systems with Complete Sequence Type Conservation
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2023 (English)In: Microorganisms, E-ISSN 2076-2607, Vol. 11, no 3, article id 699Article in journal (Refereed) Published
Abstract [en]

Listeria monocytogenes is a Gram-positive pathogen responsible for the severe foodborne disease listeriosis. A chromosomal hotspot between lmo0301 and lmo0305 has been noted to harbor diverse restriction modification (RM) systems. Here, we analyzed 872 L. monocytogenes genomes to better understand the prevalence and types of RM systems in this region, designated the immigration control region (ICR). Type I, II, III and IV RM systems were found in 86.1% of strains inside the ICR and in 22.5% of strains flanking the ICR. ICR content was completely conserved within the same multilocus sequence typing-based sequence type (ST), but the same RM system could be identified in diverse STs. The intra-ST conservation of ICR content suggests that this region may drive the emergence of new STs and promote clone stability. Sau3AI-like, LmoJ2 and LmoJ3 type II RM systems as well as type I EcoKI-like, and type IV AspBHI-like and mcrB-like systems accounted for all RM systems in the ICR. A Sau3AI-like type II RM system with specificity for GATC was harbored in the ICR of many STs, including all strains of the ancient, ubiquitous ST1. The extreme paucity of GATC recognition sites in lytic phages may reflect ancient adaptation of these phages to preempt resistance associated with the widely distributed Sau3AI-like systems. These findings indicate that the ICR has a high propensity for RM systems which are intraclonaly conserved and may impact bacteriophage susceptibility as well as ST emergence and stability.

Place, publisher, year, edition, pages
MDPI, 2023
Keywords
Listeria, chromosomal hotspot, immigration control region, restriction modification system, whole genome sequencing
National Category
Microbiology
Identifiers
urn:nbn:se:oru:diva-105223 (URN)10.3390/microorganisms11030699 (DOI)000958503200001 ()36985272 (PubMedID)2-s2.0-85151429742 (Scopus ID)
Note

Funding agencies:

National Alliance for Food Safety and Security grant (USDA) 2018-07464

United States Department of Agriculture (USDA)

Available from: 2023-03-30 Created: 2023-03-30 Last updated: 2023-04-17Bibliographically approved
Ennart, H. & Danielsson-Tham, M.-L. (. (2023). ’’Låt inte barnen trilla köttbullar’’. Svenska Dagbladet (13 mars 2023)
Open this publication in new window or tab >>’’Låt inte barnen trilla köttbullar’’
2023 (Swedish)In: Svenska Dagbladet, ISSN 1101-2412, no 13 mars 2023Article in journal, News item (Other (popular science, discussion, etc.)) Published
Abstract [sv]

Mer än 100 små barn har de senaste tolv åren fått svåra njurskador efter att ha smittats av ehec som kan finnas i rå köttfärs. Låt inte barnen vara med och trilla köttbullar, varnar Diana Karpman, specialist på njursjukdomar.

Place, publisher, year, edition, pages
Hb Svenska dagbladets AB & Co, 2023
National Category
Social Sciences Interdisciplinary Urology and Nephrology
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-105651 (URN)
Available from: 2023-04-23 Created: 2023-04-23 Last updated: 2023-04-24Bibliographically approved
Marklinder, I., Eskhult, G., Ahlgren, R., Blücher, A., Börjesson, S.-M. E., Moazzami, M., . . . Danielsson Tham, M.-L. (2022). A Structural Equation Model Demonstrating the Relationship between Food Safety Background, Knowledge, Attitudes and Behaviour among Swedish Students. Foods, 11(11), Article ID 1595.
Open this publication in new window or tab >>A Structural Equation Model Demonstrating the Relationship between Food Safety Background, Knowledge, Attitudes and Behaviour among Swedish Students
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2022 (English)In: Foods, E-ISSN 2304-8158, Vol. 11, no 11, article id 1595Article in journal (Refereed) Published
Abstract [en]

Traditionally, food safety knowledge has been seen as a factor in improving food safety behaviour. However, the relationship between knowledge and behavior is complex. The aim of the present study was to investigate self-reported data from 408 university students regarding food safety background, knowledge, attitudes, and behaviour using Structural Equation Model (SEM) to examine the influence of different factors on food safety behaviour. The SEM was applied to four factors derived from the data: Background, Knowledge, Attitude and Behaviour. The novelty of this current investigation is the inclusion of the Background factor (genus; experience of cooking and handling different food items; experience of a food safety education course; the foremost sources of food safety knowledge). The factors were constructed from variables with sufficient factor loadings and set up in a predetermined structure confirmed to be valid in previous studies. The results, demonstrated as regression coefficients between factors, confirm that the Background factor strongly influenced Knowledge (0.842). The Knowledge factor, in turn, strongly affected Attitude (0.605), while it did not directly affect Behaviour (0.301) in the same way as Attitude. Attitude had a stronger influence on Behaviour (0.438) than Knowledge. Thus, the Attitude factor seemed to play a mediating role between Knowledge and Behaviour. This indicates that students´ attitudes towards the importance of food safety may have an impact on their food safety behavior, which should have implications for the development of food safety education. This warrants further investigation and practical development.

Place, publisher, year, edition, pages
MDPI, 2022
Keywords
Attitudes, food safety, food safety education, structural equation model, university students
National Category
Food Science
Identifiers
urn:nbn:se:oru:diva-99550 (URN)10.3390/foods11111595 (DOI)000808653100001 ()35681344 (PubMedID)2-s2.0-85131691113 (Scopus ID)
Available from: 2022-06-15 Created: 2022-06-15 Last updated: 2022-08-04Bibliographically approved
Tham, W. & Danielsson Tham, M.-L. (2022). Pastörisering är ett stort framsteg. Svenska Dagbladet (14 september)
Open this publication in new window or tab >>Pastörisering är ett stort framsteg
2022 (Swedish)In: Svenska Dagbladet, ISSN 1101-2412, no 14 septemberArticle in journal, News item (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
Hb Svenska dagbladets AB & Co, 2022
National Category
Social Sciences Interdisciplinary Food Science
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-105727 (URN)
Available from: 2023-04-26 Created: 2023-04-26 Last updated: 2023-04-27Bibliographically approved
Marklinder, I., Ahlgren, R., Blücher, A., Börjesson, S.-M. E., Hellkvist, F., Moazzami, M., . . . Danielsson Tham, M.-L. (2020). Food safety knowledge, sources thereof and self-reported behaviour among university students in Sweden. Food Control, 113, Article ID 107130.
Open this publication in new window or tab >>Food safety knowledge, sources thereof and self-reported behaviour among university students in Sweden
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2020 (English)In: Food Control, ISSN 0956-7135, E-ISSN 1873-7129, Vol. 113, article id 107130Article in journal (Refereed) Published
Abstract [en]

International studies have noted shortcomings in food safety knowledge and behaviour among university students. In general students do not constitute a pronounced risk group but there are wider implications. In a foreseeable future some of them will become pregnant and a majority will be responsible for vulnerable groups in their near environment. A crucial question exists, therefore, about their food safety knowledge and safe food handling practices.

The aim of this study is to investigate food safety knowledge, sources thereof and self-reported food safety behavior among university students in Sweden.

A quantitative study design using a web-based questionnaire was chosen as the data collection method. The questionnaire was distributed through social media and e-mail.

Among the 606 respondents from 24 Swedish universities 80% were 18-30 years and 78% were women. The average number of correct answers on the knowledge questions was 7.61 out of 12 (63.4%). The foremost source of food safety knowledge was "Family and friends" (45%). Just 21.1% reported Food safety education as a source, although 35.6% had experience of a course in food hygiene/safety and/or microbiology. Respondents who reported "Family and friends" to be the foremost food safety source of knowledge also got a significantly lower rate of correct answers. Students who estimated their food safety knowledge to be good also had more correct answers. Experience of food safety education at secondary school/university/working place/polytechnic school significantly correlated with more correct answers on the knowledge questions and indicated a safer self-reported behaviour. Those with fewer correct answers also reported more unfavourable behaviours. The present study indicates that education promotes more optimal behaviors. The authors would suggest a more systematic food safety education at younger ages.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
University students, Food safety, Sources of knowledge, Self-reported behaviours, Food safety education
National Category
Food Science
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-81321 (URN)10.1016/j.foodcont.2020.107130 (DOI)000525322400015 ()2-s2.0-85081030652 (Scopus ID)
Available from: 2020-04-24 Created: 2020-04-24 Last updated: 2020-04-24Bibliographically approved
Danielsson Tham, M.-L. (2020). Restaurang- och hotellhögskolan i Grythyttan – vadan och varthän. In: Åke Granberg (Ed.), Grythytte-Krönika 2020: (pp. 22-25). Grythyttan: Grythyttans hembygdsförening
Open this publication in new window or tab >>Restaurang- och hotellhögskolan i Grythyttan – vadan och varthän
2020 (Swedish)In: Grythytte-Krönika 2020 / [ed] Åke Granberg, Grythyttan: Grythyttans hembygdsförening , 2020, p. 22-25Chapter in book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Grythyttan: Grythyttans hembygdsförening, 2020
Series
Grythytte-krönika, ISSN 1102-1675
National Category
Other Humanities
Identifiers
urn:nbn:se:oru:diva-97830 (URN)
Available from: 2022-03-05 Created: 2022-03-05 Last updated: 2022-03-07Bibliographically approved
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
Open this publication in new window or tab >>Implicated food products for listeriosis and changes in serovars of Listeria monocytogenes affecting humans in recent decades
2018 (English)In: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 15, no 7, p. 387-397Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
Mary Ann Liebert, 2018
Keywords
serovar, RTE foods, hospital, listeriosis
National Category
Food Science
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-67759 (URN)10.1089/fpd.2017.2419 (DOI)000437227500001 ()29958028 (PubMedID)2-s2.0-85050036581 (Scopus ID)
Available from: 2018-07-07 Created: 2018-07-07 Last updated: 2023-12-08Bibliographically approved
Danielsson Tham, M.-L. (2018). Ordning, reda & tid: prylar och små otyg. In: Anders Landén (Ed.), Älskade prylar: 100 år av teknisk innovation (pp. 92-93). Stockholm/Insjön: Förlaget Näringslivshistoria & Clas Ohlson
Open this publication in new window or tab >>Ordning, reda & tid: prylar och små otyg
2018 (Swedish)In: Älskade prylar: 100 år av teknisk innovation / [ed] Anders Landén, Stockholm/Insjön: Förlaget Näringslivshistoria & Clas Ohlson , 2018, p. 92-93Chapter in book (Other (popular science, discussion, etc.))
Abstract [sv]

Dammvippor, tejp, dammsugare och grenuttag gör livet enklare att leva. Att hålla ordning och reda har under århundrade ökat livskvaliteten och ger välförtjänta pauser och skinande rent

Place, publisher, year, edition, pages
Stockholm/Insjön: Förlaget Näringslivshistoria & Clas Ohlson, 2018
National Category
Other Humanities not elsewhere specified
Identifiers
urn:nbn:se:oru:diva-64723 (URN)978-91-983409-8-3 (ISBN)
Available from: 2018-01-31 Created: 2018-01-31 Last updated: 2018-01-31Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0003-0154-9452

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