title: Serological and virological surveillance of avian influenza A virus H9N2 subtype in humans and poultry in Shanghai, China, between 2008 and 2010.
abstract: We report the serological evidence of low-pathogenic avian influenza (LPAI) H9N2 infection in an occupational poultry-exposed population and a general population. A serological survey of an occupational poultry-exposed population and a general population was conducted using a haemagglutinin-inhibiting (HI) assay in Shanghai, China, from January 2008 to December 2010. Evidence of higher anti-H9 antibodies was found in serum samples collected from poultry workers. During this period, 239 H9N2 avian influenza viruses (AIVs) were isolated from 9297 tracheal and cloacal paired specimens collected from the poultry in live poultry markets. In addition, a total of 733 influenza viruses were isolated from 1569 nasal and throat swabs collected from patients with influenza-like symptoms in a sentinel hospital, which include H3N2, H1N1, pandemic H1N1 and B, but no H9N2 virus was detected. These findings highlight the need for long-term surveillance of avian influenza viruses in occupational poultry-exposed workers.
authors.affiliation: The MOE Key Laboratory of Public Health Safety, School of Public Health, Fudan University, Shanghai, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Wang
authors.forename: L
authors.initials: L
authors.lastname: Ju
authors.forename: P
authors.initials: P
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Zhou
authors.forename: X
authors.initials: X
authors.lastname: Lv
authors.forename: L
authors.initials: L
authors.lastname: Li
authors.forename: H
authors.initials: H
authors.lastname: Shen
authors.forename: H
authors.initials: H
authors.lastname: Su
authors.forename: L
authors.initials: L
authors.lastname: Jiang
authors.forename: Q
authors.initials: Q
authors.lastname: Jiang
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D003132:Commerce; D006801:Humans; D053127:Influenza A Virus, H9N2 Subtype; D005585:Influenza in Birds / Q000453:epidemiology / Q000821:virology*; D007251:Influenza, Human / Q000453:epidemiology / Q000821:virology*; D011159:Population Surveillance; D011200:Poultry; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D013997:Time Factors; D015047:Zoonoses
keywords: Avian influenza virus; H9N2 subtype; occupational exposure; poultry; serology