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Epidemiol Infect. 2012 Apr;140(4):626-32. doi: 10.1017/S095026881100121X. Epub 2011 Jul 27.

Cyclospora cayetanensis: a description of clinical aspects of an outbreak in Quebec, Canada.

Author information

1
Direction de santé publique de la Montérégie, Longueuil, Quebec, Canada. Francois.Milord@USherbrooke.ca

Abstract

Cyclospora cayetanensis is an emerging infectious agent. The aim of this study was to describe an outbreak that occurred in 250 adults exposed to contaminated food, focusing on the duration and relapses of symptoms, complications and evidence of local transmission. This outbreak affected workers who ate in a restaurant in June 2005. Cyclospora sp. was observed in the stools of 20 cases and 122 probable cases were identified. The attack rate was estimated at 89%. Main symptoms were diarrhoea (96%), nausea (88%), fatigue (87%), abdominal cramps (85%), fever (52%) and headaches (45%). Contaminated fresh basil originating from a Mexican farm, used to prepare an uncooked appetizer, was identified as the source. In this non-endemic population of immunocompetent adults, Cyclospora infection presents with watery diarrhoea lasting from 4 to 18 days and fatigue lasting from 11 to 42 days. For a small proportion of affected persons, recovery can be delayed.

PMID:
21791150
DOI:
10.1017/S095026881100121X
[Indexed for MEDLINE]

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