15 Pfizer and BioNTech announce their vaccine is USELESS 11 months after dosing: If you are vaccinated, get ready to take boosters forever. (alexberenson.substack.com) posted 4 years ago by axolotl_peyotl 4 years ago by axolotl_peyotl +15 / -0 5 comments share 5 comments share save hide report block hide replies
Mutations. You don't know right away if a person is succumbing to the virus because of something about the person or if the virus mutated into something more virulent. The shots ostensibly aim to reduce symptoms.