Israel said the delta variant is making Pfizer’s COVID-19 shot less effective. Medical experts say it’s too soon to worry
July 08, 2021 at 14:21 PM EDT
Israel said the delta variant is blunting the effectiveness of BioNTech and Pfizer’s COVID-19 shot, but how well a vaccine works is going to fluctuate in the real world and a single data point may not tell the whole story.
