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Epidemic giardiasis caused by a contaminated public water supply.

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Title: Epidemic giardiasis caused by a contaminated public water supply.
Authors: Kent GP (AUTHOR), Greenspan JR (AUTHOR), Herndon JL (AUTHOR), Mofenson LM (AUTHOR), Harris JS (AUTHOR), Eng TR (AUTHOR), Waskin HA (AUTHOR)
Source: American Journal of Public Health. Feb1988, Vol. 78 Issue 2, p139-143. 5p.
Subjects: Giardiasis, Protozoan diseases, Water supply, Contamination of drinking water, Water pollution, Telephone surveys, Diarrhea, Giardia
Geographic Terms: Pittsfield (Mass.), Massachusetts
Abstract: Abstract: In the period November 1, 1985 to January 31, 1986, 703 cases of giardiasis were reported in Pittsfield, Massachusetts (population 50,265). The community obtained its water from two main reservoirs (A and B) and an auxiliary reservoir (C). Potable water was chlorinated but not filtered. The incidence of illness peaked approximately two weeks after the city began obtaining a major portion of its water from reservoir C, which had not been used for three years. The attack rate of giardiasis for residents of areas supplied by reservoir C was 14.3/1000, compared with 7.0/1000 in areas that received no water from reservoir C. A case-control study showed that persons with giardiasis were more likely to be older and to have drunk more municipal water than household controls. A community telephone survey indicated that over 3,800 people could have had diarrhea that might have been caused by Giardia, and 95 per ¢ of households were either using alternate sources of drinking water or boiling municipal water. Environmental studies identified Giardia cysts in the water of reservoir C. Cysts were also detected in the two other reservoirs supplying the city, but at lower concentrations. This investigation highlights the risk of giardiasis associated with unfiltered surface water systems. [ABSTRACT FROM AUTHOR]
Copyright of American Journal of Public Health is the property of American Public Health Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Epidemic giardiasis caused by a contaminated public water supply.
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  Data: <searchLink fieldCode="DE" term="%22Giardiasis%22">Giardiasis</searchLink><br /><searchLink fieldCode="DE" term="%22Protozoan+diseases%22">Protozoan diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Water+supply%22">Water supply</searchLink><br /><searchLink fieldCode="DE" term="%22Contamination+of+drinking+water%22">Contamination of drinking water</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Telephone+surveys%22">Telephone surveys</searchLink><br /><searchLink fieldCode="DE" term="%22Diarrhea%22">Diarrhea</searchLink><br /><searchLink fieldCode="DE" term="%22Giardia%22">Giardia</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Pittsfield+%28Mass%2E%29%22">Pittsfield (Mass.)</searchLink><br /><searchLink fieldCode="DE" term="%22Massachusetts%22">Massachusetts</searchLink>
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  Data: Abstract: In the period November 1, 1985 to January 31, 1986, 703 cases of giardiasis were reported in Pittsfield, Massachusetts (population 50,265). The community obtained its water from two main reservoirs (A and B) and an auxiliary reservoir (C). Potable water was chlorinated but not filtered. The incidence of illness peaked approximately two weeks after the city began obtaining a major portion of its water from reservoir C, which had not been used for three years. The attack rate of giardiasis for residents of areas supplied by reservoir C was 14.3/1000, compared with 7.0/1000 in areas that received no water from reservoir C. A case-control study showed that persons with giardiasis were more likely to be older and to have drunk more municipal water than household controls. A community telephone survey indicated that over 3,800 people could have had diarrhea that might have been caused by Giardia, and 95 per ¢ of households were either using alternate sources of drinking water or boiling municipal water. Environmental studies identified Giardia cysts in the water of reservoir C. Cysts were also detected in the two other reservoirs supplying the city, but at lower concentrations. This investigation highlights the risk of giardiasis associated with unfiltered surface water systems. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of American Journal of Public Health is the property of American Public Health Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.2105/AJPH.78.2.139
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 5
        StartPage: 139
    Subjects:
      – SubjectFull: Giardiasis
        Type: general
      – SubjectFull: Protozoan diseases
        Type: general
      – SubjectFull: Water supply
        Type: general
      – SubjectFull: Contamination of drinking water
        Type: general
      – SubjectFull: Water pollution
        Type: general
      – SubjectFull: Telephone surveys
        Type: general
      – SubjectFull: Diarrhea
        Type: general
      – SubjectFull: Giardia
        Type: general
      – SubjectFull: Pittsfield (Mass.)
        Type: general
      – SubjectFull: Massachusetts
        Type: general
    Titles:
      – TitleFull: Epidemic giardiasis caused by a contaminated public water supply.
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            NameFull: Kent GP
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            NameFull: Greenspan JR
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            – D: 01
              M: 02
              Text: Feb1988
              Type: published
              Y: 1988
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              Value: 78
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