A branch of the flu family tree has died and won't be included in future US vaccines
When you purchase through linkup on our website , we may earn an affiliate commission . Here ’s how it works . A character of grippe virus that used to sicken people every class has n’t been spotted anywhere on Earth since March 2020 . As such , experts have advised that the obviously nonextant viruses be removed from next year ’s flu vaccines . The now - extinct viruses were a offset of the flu B phratry tree bed as the Yamagata lineage ....