Endemic Giardiasis in New Hampshire: A Case-Control Study of Environmental Risks

David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. Herndon, C. Fordham von Reyn, David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. Herndon, C. Fordham von Reyn, David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. HerndonC. Fordham von Reyn, David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. Herndon, C. Fordham von Reyn, David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. Herndon, C. Fordham von Reyn, David T. Dennis, Robert P. Smith, Joyce J. Welch, Christopher G. Chute, Barbara Anderson, Joy L. Herndon, C. Fordham von Reyn

Research output: Contribution to journalArticlepeer-review

Abstract

Giardiasis is the most frequently reported diarrheal disease in northern New England. A casecontrol study of endemic giardiasis and environmental risk factors among residents of New Hampshire involved 273 cases from the state’s 1984 disease registry and 375 controls. Giardiasis was associated with a shallow dug well as a residential water source (odds ratio [OR] = 2.4; 95% confidence interval [CI], 1.3-47.0), a recent history of drinking untreated surface water (OR = 3.4; CI, 2.1-5.5), a history of swimming in a lake or pond (OR = 4.6; CI, 2.4-86.0) or swimming in any natural body of fresh water (OR = 4.0; CI, 2.3-70.0), contact with a person thought to have giardiasis (OR = 2.3; CI, 1.4-36.0), and recent contact with a child in day care (OR = 1.5; CI, 1.0-2.1). Multivariate modeling supported these associations. Shallow wells, relatively common in New Hampshire, have not previously been established as important sources of giardiasis.

Original languageEnglish (US)
Pages (from-to)1391-1395
Number of pages5
JournalJournal of Infectious Diseases
Volume167
Issue number6
DOIs
StatePublished - Jun 1993
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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