The WHO and drug regulators want to reformulate the flu vaccine. It’s easier said than done
STAT
JANUARY 16, 2024
Last fall, the World Health Organization and some national drug regulators urged influenza vaccine manufacturers to drop the component known as B/Yamagata from flu vaccines as quickly as possible, citing the fact that this lineage of flu B viruses appears to have been snuffed out during the Covid-19 pandemic. It might seem like that request would be as simple as deciding to leave blueberries out of a mixed-fruit smoothie.
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