defiende una "bakuna" anual.. pero en UK ya apuntan a 4 al año (cada 3 meses, si):
pues eso:
Pfizer’s CEO on the need for endless boosters.
— BDW (@BryanDeanWright) November 29, 2021
“I think we're going to have an annual revaccination and that should be able to keep us really safe."pic.twitter.com/SztSsLXymf
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