Circulation of influenza B lineages in northern Viet Nam, 2007-2014.

ABSTRACT:

Introduction

Influenza B viruses circulate throughout Viet Nam, and their activities vary by region. There have been two antigenically distinct lineages of influenza B viruses co-circulating in the past 20 years; however, only one lineage is selected as a component of contemporary trivalent seasonal influenza vaccines. To improve the understanding of circulating influenza B lineages and influenza vaccine mismatches, we report the virus lineages circulating in northern Viet Nam over an eight-year period (2007-2014).

Methods

Lineages of 331 influenza B viruses were characterized by haemagglutination inhibition assay against standard reference ferret (Yamagata) and sheep (Victoria) antisera. Sequence analysis of the haemagglutinin gene was performed in 64 selected influenza B i

SUBMITTER: Le TT 

PROVIDER: S-EPMC4712529 | biostudies-literature | 2015 Oct-Dec

REPOSITORIES: biostudies-literature