| 1. |
- 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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| 2. |
- Ulleryd, Peter, 1958, et al.
(författare)
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Legionnaires' disease from a cooling tower in a community outbreak in Lidkoping, Sweden-epidemiological, environmental and microbiological investigation supported by meteorological modelling
- 2012
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Ingår i: BMC Infectious Diseases. - : Springer Science and Business Media LLC. - 1471-2334. ; 12, s. 313-
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Tidskriftsartikel (refereegranskat)abstract
- Background: An outbreak of Legionnaires' Disease took place in the Swedish town Lidkoping on Lake Vanern in August 2004 and the number of pneumonia cases at the local hospital increased markedly. As soon as the first patients were diagnosed, health care providers were informed and an outbreak investigation was launched. Methods: Classical epidemiological investigation, diagnostic tests, environmental analyses, epidemiological typing and meteorological methods. Results: Thirty-two cases were found. The median age was 62 years (range 36 - 88) and 22 (69%) were males. No common indoor exposure was found. Legionella pneumophila serogroup 1 was found at two industries, each with two cooling towers. In one cooling tower exceptionally high concentrations, 1.2 x 10(9) cfu/L, were found. Smaller amounts were also found in the other tower of the first industry and in one tower of the second plant. Sero-and genotyping of isolated L. pneumophila serogroup 1 from three patients and epidemiologically suspected environmental strains supported the cooling tower with the high concentration as the source. In all, two L. pneumophila strains were isolated from three culture confirmed cases and both these strains were detected in the cooling tower, but one strain in another cooling tower as well. Meteorological modelling demonstrated probable spread from the most suspected cooling tower towards the town centre and the precise location of four cases that were stray visitors to Lidkoping. Conclusions: Classical epidemiological, environmental and microbiological investigation of an LD outbreak can be supported by meteorological modelling methods. The broad competence and cooperation capabilities in the investigation team from different authorities were of paramount importance in stopping this outbreak.
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