How useful would a COVID-19 #Vaccine be if it only lasted 2-3 months?

Scientific studies confirm that COVID-19 antibodies fade very quickly renewing questions about vaccine efficacy even before advanced trials have started. $PFE $BNTX $MRNA $JNJ $INO $AZN https://t.co/FeOXDY43CK https://t.co/NTu101fvao