title: Case-control study of risk factors for human infection with influenza A(H7N9) virus in Jiangsu Province, China, 2013.
abstract: We describe a case-control study performed in Jiangsu, China, to evaluate risk factors for human infection with novel avian influenza A(H7N9) virus. Twenty-five cases and 93 controls matched by age, sex, and location were included in the study. Direct contact with poultry or birds in the two weeks before illness onset, chronic medical conditions (hypertension excluded), and environment-related exposures were significantly associated with A(H7N9) infection.
authors.affiliation: Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China.
authors.forename: J
authors.initials: J
authors.lastname: Ai
authors.forename: Y
authors.initials: Y
authors.lastname: Huang
authors.forename: K
authors.initials: K
authors.lastname: Xu
authors.forename: D
authors.initials: D
authors.lastname: Ren
authors.forename: X
authors.initials: X
authors.lastname: Qi
authors.forename: H
authors.initials: H
authors.lastname: Ji
authors.forename: A
authors.initials: A
authors.lastname: Ge
authors.forename: Q
authors.initials: Q
authors.lastname: Dai
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: C
authors.initials: C
authors.lastname: Bao
authors.forename: F
authors.initials: F
authors.lastname: Tang
authors.forename: G
authors.initials: G
authors.lastname: Shi
authors.forename: T
authors.initials: T
authors.lastname: Shen
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
authors.forename: M
authors.initials: M
authors.lastname: Zhou
authors.forename: H
authors.initials: H
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D001717:Birds; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D016867:Immunocompromised Host; D064766:Influenza A Virus, H7N9 Subtype; D005585:Influenza in Birds / Q000453:epidemiology / Q000635:transmission; D007251:Influenza, Human / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D055815:Young Adult; D015047:Zoonoses