Clusters of Human Infection and Human-to-Human Transmission of Avian Influenza A(H7N9) Virus, 2013-2017

Emerg Infect Dis. 2018 Feb;24(2):397-400. doi: 10.3201/eid2402.171565. Epub 2018 Feb 17.

Abstract

To detect changes in human-to-human transmission of influenza A(H7N9) virus, we analyzed characteristics of 40 clusters of case-patients during 5 epidemics in China in 2013-2017. Similarities in number and size of clusters and proportion of clusters with probable human-to-human transmission across all epidemics suggest no change in human-to-human transmission risk.

Keywords: Avian influenza A(H7N9) virus; China; clusters; human infections; human-to-human transmission; viruses.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cluster Analysis
  • Epidemics*
  • Humans
  • Influenza A Virus, H7N9 Subtype*
  • Influenza, Human / epidemiology*
  • Influenza, Human / transmission*
  • Influenza, Human / virology
  • Retrospective Studies