Endemic giardiasis and municipal water supply. | Zendy

Gil Fraser | Zendy; K R Cooke | Zendy

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Endemic giardiasis and municipal water supply.

Author(s) -

Gil Fraser,

K R Cooke

Publication year - 1991

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.81.6.760

Subject(s) - water supply , incidence (geometry) , odds ratio , environmental health , population , medicine , public health , geography , veterinary medicine , environmental science , environmental engineering , pathology , mathematics , geometry

To test the hypothesis that endemic giardiasis may be transmitted by unfiltered municipal water supplies, the incidence of laboratory-confirmed giardiasis was studied in a natural experiment due to the arrangement of the public water supply of Dunedin, New Zealand. The incidence rate ratio was 3.3 (90% CI = 1.1, 10.1) for the population receiving unfiltered (microstrained) water relative to that using sand filtered water. In a parallel case-control study of incident cases, the odds ratio for giardiasis and unfiltered (microstrained) water supply was 1.8 (90% CI = 0.5, 6.9).

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