Risk Factors for Influenza A(H7N9) Disease in China, a Matched Case Control Study, October 2014 to April 2015.

ABSTRACT: Background.  Human infections with avian influenza A(H7N9) virus have been associated with exposure to poultry and live poultry markets (LPMs). We conducted a case-control study to identify additional and more specific risk factors. Methods.  Cases were laboratory-confirmed A(H7N9) infections in persons in China reported from October 1, 2014 to April 30, 2015. Poultry workers, those with insufficient data, and those refusing participation were excluded. We matched up to 4 controls per case by sex, age, and residential community. Using conditional logistic regression, we examined associations between A(H7N9) infection and potential risk factors. Results.  Eighty-five cases and 334 controls were enrolled with similar demographic characteristics. Incr

SUBMITTER: Zhou L 

PROVIDER: S-EPMC5047420 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature