Risk factors for human infection with avian influenza A H5N1, Vietnam, 2004 - PubMed (original) (raw)

Risk factors for human infection with avian influenza A H5N1, Vietnam, 2004

Pham Ngoc Dinh et al. Emerg Infect Dis. 2006 Dec.

Abstract

To evaluate risk factors for human infection with influenza A subtype H5N1, we performed a matched case-control study in Vietnam. We enrolled 28 case-patients who had laboratory-confirmed H5N1 infection during 2004 and 106 age-, sex-, and location-matched control-respondents. Data were analyzed by matched-pair analysis and multivariate conditional logistic regression. Factors that were independently associated with H5N1 infection were preparing sick or dead poultry for consumption < or =7 days before illness onset (matched odds ratio [OR] 8.99, 95% confidence interval [CI] 0.98-81.99, p = 0.05), having sick or dead poultry in the household < or =7 days before illness onset (matched OR 4.94, 95% CI 1.21-20.20, p = 0.03), and lack of an indoor water source (matched OR 6.46, 95% CI 1.20-34.81, p = 0.03). Factors not significantly associated with infection were raising healthy poultry, preparing healthy poultry for consumption, and exposure to persons with an acute respiratory illness.

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Comment in

• Determining risk factors for infection with influenza A (H5N1).
  Lukrafka JL, Zavascki AP, Barcellos N, Fuchs SC. Lukrafka JL, et al. Emerg Infect Dis. 2007 Jun;13(6):955-6; author reply 956-. doi: 10.3201/eid1306.070025. Emerg Infect Dis. 2007. PMID: 17582909 Free PMC article. No abstract available.

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