Flu Vaccine Strains Get Easy OK From FDA Panel, But Desire For More Efficacy Remains

US advisory committee overwhelmingly supports WHO's influenza vaccine strain selections, although data are limited as to why current vaccines are not more effective. 

The US FDA's Vaccines and Related Biological Products Advisory Committee voted in favor of approving the World Health Organization's (WHO's) strain selections for the 2018-2019 northern hemisphere trivalent and quadrivalent influenza vaccines, but members nevertheless remained concerned about how to improve the overall efficacy of the vaccines.

In separate votes, panelists voted 12-0 in favor of the A/Michigan/45/2015 (H1N1)pdm09-like virus and the A/Singapore/INFIMH-16-0019/2016 (H3N2)-like virus, along with...

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