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- Danielsson-Tham, Marie-Louise, 1947-, et al.
(författare)
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A fatal case of Listeria endocarditis in a man following his tending of goats suggests an epidemiological link which is not supported by the results
- 1997
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Ingår i: Journal of Veterinary Medicine Series B-Infectious Diseases and Veterinary Public Health. - : Wiley. - 0931-1793 .- 1439-0450. ; B 44:1-10, s. 253-256
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Tidskriftsartikel (refereegranskat)abstract
- A man died in endocarditis due to listeriosis in the late autumn. He had been looking after two goats during the summer. Listeria monocyto?enes was isolated from a rectal swab from one of the goats. The goat faeces isolate and the human blood isolate were of identical serovar. The two isolates, however, were shown to be different by multilocus electrophoretic enzyme analysis and ribotyping, as well as by biotyping, Thus, these results do not support the hypothesis that the man was infected by the goat.
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| 2. |
- Danielsson-Tham, Marie-Louise, et al.
(författare)
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Characterization of Listeria strains isolated from soft cheese
- 1993
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Ingår i: International Journal of Food Microbiology. - : Elsevier. - 0168-1605 .- 1879-3460. ; 18:2, s. 161-166
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Tidskriftsartikel (refereegranskat)abstract
- Three soft cheeses were exposed to quantitative analysis for listeria and found to contain a large number of listeria. Thirty-five of the listeria strains isolated from the three cheeses were characterized by use of biochemical tests, serotyping, phagetyping and DNA restriction enzyme analysis. Seven isolates were identified as Listeria innocuaand 28 as Listeria monocytogenes. Two to four different clones of L. monocytogenescould be identified from each cheese. In contrast, only one clone could be detected among the L. innocua isolates. From an epidemiological point of view the findings of different clones of L. monocytogenes in the same cheese emphasize the need for typing several listeria isolates from one and the same food sample. It is concluded that the best overview of the population of the listeria strains is obtained after direct plating of the sample followed by enumeration, isolation and extensive typing.
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| 3. |
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| 4. |
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| 5. |
- Eilertz, Ingrid, et al.
(författare)
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Isolation of Listeria monocytogenes from goat cheese associated with a case of listeriosis in goat
- 1993
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Ingår i: Acta Veterinaria Scandinavica. - : Danske Dyrelaegeforening. - 0044-605X .- 1751-0147. ; 34:2, s. 145-149
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Tidskriftsartikel (refereegranskat)abstract
- Listeria monocytogenes was isolated from the brain of a goat, which was euthanized due to listeriosis. A few weeks later a similar subtype of L. monocytogenes was isolated from an on-farm manufactured fresh cheese which did not contain any milk from the goat which had suffered from listeriosis. A similar subtype was also found on 1 of the shelves in the refrigerator where cheeses were stored. Prior to the onset of listeriosis, 1 fresh cheese had been made of milk from the actual goat, which may have excreted L. monocytogenes in her milk. Thus, the cheese made of this milk may have contaminated the shelves in the refrigerator which then has served as a Listeria reservoir for new cheeses during several weeks.
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| 6. |
- Eklöw, Annelie, et al.
(författare)
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Three important clones of Listeria monocytogenes
- 1996
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Ingår i: Proceedings of the symposium Food Associated Pathogens, May 6-8, 1996, Uppsala, Sweden. - Uppsala : SLU, Department of Food Hygiene. - 9157651329 ; , s. 221-222
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Konferensbidrag (refereegranskat)abstract
- The object of this study was to characterize Swedish human strains of Listeria monocytogenes
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| 7. |
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| 8. |
- Ericsson, Henrik, et al.
(författare)
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Division of Listeria monocytogenes serovar 4b strains into two groups by PCR and restriction enzyme analysis
- 1995
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Ingår i: Applied and Environmental Microbiology. - : American Society for Microbiology. - 0099-2240 .- 1098-5336. ; 61:11, s. 3872-3874
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Tidskriftsartikel (refereegranskat)abstract
- Altogether, 133 strains of Listeria monocytogenes serovar 4b were investigated, A segment of 2,916 bp containing parts of the two genes inlA and inlB in L. monocytogenes was amplified by the PCR technique. The PCR product obtained was cleaved with the restriction enzyme AluI, and the fragments generated were separated by gel electrophoresis, leading to two distinct groups: PCR-restriction enzyme analysis groups I and II, containing 37 and 96 strains, respectively, The PCR-restriction enzyme analysis method described in this paper could be a useful tool for the subtyping of L. monocytogenes serovar 4b strains.
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| 9. |
- Parihar, Vishal Singh, et al.
(författare)
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Characterization of human invasive isolates of Listeria monocytogenes in Sweden 1986-2007
- 2008
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Ingår i: Foodborne pathogens and disease. - : Mary Ann Liebert. - 1535-3141 .- 1556-7125. ; 5:6, s. 755-761
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 10. |
- Tham, Wilhelm, 1951-, et al.
(författare)
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Listeria monocytogenes subtypes associated with mortality among fallow deer (Dama dama)
- 1999
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Ingår i: Journal of zoo and wildlife medicine. - 1042-7260 .- 1937-2825. ; 30:4, s. 545-549
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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