Waterborne giardiasis at a mountain resort: evidence for acquired immunity. | Zendy

G R Istre | Zendy; T S Dunlop | Zendy; Guetchine Gaspard | Zendy; Richard Hopkins | Zendy

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Waterborne giardiasis at a mountain resort: evidence for acquired immunity.

Author(s) -

G R Istre,

T S Dunlop,

Guetchine Gaspard,

Richard Hopkins

Publication year - 1984

Publication title -

american journal of public health

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.284

H-Index - 264

eISSN - 1541-0048

pISSN - 0090-0036

DOI - 10.2105/ajph.74.6.602

Subject(s) - outbreak , environmental health , attack rate , giardia , medicine , tap water , veterinary medicine , virology , environmental science , environmental engineering

In November 1981, an outbreak of waterborne giardiasis occurred at a popular ski resort in Colorado. Stratification of illness by consumption of municipal tap water showed a striking dose-response, with an attack rate of 42 per cent among persons who drank six or more glasses of water per day. Filtered water samples revealed Giardia cysts in specimens both before and after treatment, and several deficiencies were found in the water treatment facility. Residents who had lived in the area greater than 2 years had a lower attack rate for illness than short-term residents.

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