Emerging Infectious Diseases (Sep 2014)

Asymptomatic, Mild, and Severe Influenza A(H7N9) Virus Infection in Humans, Guangzhou, China

  • Zongqiu Chen,
  • Hui Liu,
  • Jianyun Lu,
  • Lei Luo,
  • Kuibiao Li,
  • Yufei Liu,
  • Eric H.Y. Lau,
  • Biao Di,
  • Hui Wang,
  • Zhicong Yang,
  • Xincai Xiao

DOI
https://doi.org/10.3201/eid2009.140424
Journal volume & issue
Vol. 20, no. 9
pp. 1535 – 1540

Abstract

Read online

Targeted surveillance for influenza A(H7N9) identified 21 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 a family cluster of 1 severe and 1 mild case suggested limited person-to-person transmission of this virus.

Keywords