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Centers for Disease Control and Prevention, Emerging Infectious Diseases, 2(19), p. 309-312, 2013

DOI: 10.3201/eid1902.120628

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Risk Factors for Influenza A(H1N1)pdm09 among Students, Beijing, China

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Data provided by SHERPA/RoMEO

Abstract

To identify risk factors associated with influenza A(H1N1)pdm09 among students in Beijing, China, we conducted a case–control study. Participants (304 case-patients and 608 controls, age range 6–19 years) were interviewed by using a standardized questionnaire. We found that in addition to vaccination, nonpharmaceutical interventions appeared to be protective.