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. 2004 Jun;10(6):1007-15.
doi: 10.3201/10.3201/eid1006.030325.

Sporadic cryptosporidiosis, North Cumbria, England, 1996-2000

Stella Goh  1 , Mark Reacher, David P Casemore, Neville Q Verlander, Rachel Chalmers, Margaret Knowles, Joy Williams, Keith Osborn, Sarah Richards
Affiliations

Sporadic cryptosporidiosis, North Cumbria, England, 1996-2000

Stella Goh et al. Emerg Infect Dis. 2004 Jun.

Abstract

Risk factors for sporadic cryptosporidiosis were determined in 152 patients and 466 unmatched controls who resided in two local government districts in North Cumbria, North West England, from March 1, 1996, to February 29, 2000. Risk was associated with the usual daily volume of cold unboiled tap water drunk (odds ratio [OR] 1.40, 95% confidence intervals [CI] 1.14 to 1.71 per pint consumed per day [p = 0.001]) and short visits to farms (OR 2.02, 95% CI 1.04 to 3.90, p = 0.04). Fifty-six (84%) of 67 fecal specimens from patients obtained from January 1, 1998, and February 29, 2000, were Cryptosporidium parvum genotype 2 (animal and human strain). Livestock fecal pollution of water sources appears to be the leading cause of human sporadic cryptosporidiosis in this population and shows the need for better protection of water catchments from livestock and improved drinking water treatment in this area of England.

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Figures

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Figure
Case-patients recruited to the study by month of onset and water supply zone.
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