Pfizer vaccine less effective against delta variant

A study conducted in Israel found that the Pfizer COVID-19 vaccine is somewhat less effective against the more infectious delta variant, though it was still found to be effective at preventing severe illness....

Pfizer vaccine less effective against delta variant
A study conducted in Israel found that the Pfizer COVID-19 vaccine is somewhat less effective against the more infectious delta variant, though it was still found to be effective at preventing severe illness....