| antigenic variation of influenza a (h3n2) virus in relation to influenza epidemics in shanghai (1968-1977). | | 1985 | 3922694 |
| [type and subtype distribution of influenza virus and genetic evolution of hemagglutinin in shanghai area in duration of 2004 - 2008]. | to analyze the type and subtype distribution of influenza virus and the genetic evolution of hemagglutinin (ha) in shanghai area during 2004 to 2008. | 2009 | 19534952 |
| [serological survey on antibodies to influenza a viruses subtype h1, h3, h5 and h9 of population in shanghai]. | | 2009 | 19642392 |
| [etiology monitoring of influenza virus and variation in hemagglutinin genes of h13 subtype in wuxi area]. | to monitor the seasonal distribution of influenza types and subtypes in wuxi area during 2005-2008, and to investigate the variation in hemagglutinin (ha) genes of a/h3n2 strains in 2008. | 2009 | 20104768 |