[dinodino]

Please cite from a reputable journal, not a fake “news” source like CNN or MSN.

[fireman15]

Please cite from a reputable journal, not a fake “news” source like CNN or MSN.

“A full course of the Pfizer-BioNTech vaccine was just 39% effective at preventing infections and 41% effective at preventing symptomatic infections caused by the Delta Covid-19 variant, according to Israel's health ministry, down from early estimates of 64% two weeks ago. “

https://www.forbes.com/sites/roberthart/2021/07/23/pfizer-shot-just-39-effective-against-delta-infection-but-largely-prevents-severe-illness-israel-study-suggests/?sh=13b301fd584f

There are loads of other sources even for people like yourself who have difficulty looking up information themselves.