Monitoring avian influenza A(H7N9) virus through national influenza-like illness surveillance, China

Cuiling Xu; Fiona Havers; Lijie Wang; Tao Chen; Jinghong Shi; Dayan Wang; Jing Yang; Lei Yang; Marc-Alain Widdowson; Yuelong Shu

doi:10.3201/eid1908.130662

Monitoring avian influenza A(H7N9) virus through national influenza-like illness surveillance, China

Emerg Infect Dis. 2013 Aug;19(8):1289-92. doi: 10.3201/eid1908.130662.

Authors

Cuiling Xu¹, Fiona Havers, Lijie Wang, Tao Chen, Jinghong Shi, Dayan Wang, Jing Yang, Lei Yang, Marc-Alain Widdowson, Yuelong Shu

Affiliation

¹ Chinese Center for Disease Control and Prevention, Beijing, China.

Abstract

In China during March 4-April 28, 2013, avian influenza A(H7N9) virus testing was performed on 20,739 specimens from patients with influenza-like illness in 10 provinces with confirmed human cases: 6 (0.03%) were positive, and increased numbers of unsubtypeable influenza-positive specimens were not seen. Careful monitoring and rapid characterization of influenza A(H7N9) and other influenza viruses remain critical.

Keywords: China; H7N9; avian influenza; avian influenza A(H7N9) virus; influenza; influenza-like illness; subtype H7N9; surveillance; viruses.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adolescent
Adult
Child
Child, Preschool
China / epidemiology
Disease Outbreaks*
Epidemiological Monitoring
Female
Humans
Infant
Influenza A Virus, H7N9 Subtype*
Influenza, Human / epidemiology*
Influenza, Human / virology
Male
Middle Aged
Sentinel Surveillance
Young Adult