Asymptomatic, mild, and severe influenza A(H7N9) virus infection in humans, Guangzhou, China

Emerg Infect Dis. 2014 Sep;20(9):1535-40. doi: 10.3201/eid2009.140424.

Abstract

Targeted surveillance for influenza A(H7N9) identified 24 cases of infection with this virus in Guangzhou, China, during April 1, 2013-March 7, 2014. The spectrum of illness ranged from severe pneumonia to asymptomatic infection. Epidemiologic findings for 2 family clusters of infection highlight the importance of rigorous close contact monitoring.

Publication types

  • Historical Article
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Child
  • Child, Preschool
  • China / epidemiology
  • Disease Outbreaks
  • Female
  • History, 21st Century
  • Humans
  • Infant
  • Infant, Newborn
  • Influenza A Virus, H7N9 Subtype* / genetics
  • Influenza A Virus, H7N9 Subtype* / isolation & purification
  • Influenza, Human / diagnosis*
  • Influenza, Human / epidemiology*
  • Influenza, Human / history
  • Influenza, Human / microbiology
  • Male
  • Middle Aged
  • Pneumonia, Viral / diagnosis
  • Pneumonia, Viral / epidemiology
  • Population Surveillance
  • Risk Factors
  • Severity of Illness Index
  • Young Adult