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abstractpubmed· Abstract 2018· item PMID:30015611
Variation in Influenza B Virus Epidemiology by Lineage, China. We used national sentinel surveillance data in China for 2005-2016 to examine the lineage-specific epidemiology of influenza B. Influenza B viruses circulated every year with relatively lower activity than influenza A. B/Yamagata was more frequently detected in adults than in children.