Comparative Epidemiology of Influenza B Yamagata- and Victoria-Lineage Viruses in Households.

ABSTRACT: Influenza B viruses split into 2 distinct lineages in the early 1980s, commonly named the Victoria and Yamagata lineages. There are few data on the comparative epidemiology of Victoria- and Yamagata-lineage viruses. In 2007-2011, we enrolled 75 and 34 households containing index patients with acute respiratory illness who tested positive for Yamagata- and Victoria-lineage viruses, respectively, from outpatient clinics in Hong Kong, China. These index patients and their household contacts were followed up for 7-10 days. We examined overall risk of polymerase chain reaction-confirmed infection among household contacts and the risk of secondary infection within households using an individual-based hazard model that accounted for tertiary transmission and infections occurring outside the house

SUBMITTER: Xu C 

PROVIDER: S-EPMC4715237 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature