Posted in Web Biden says COVID’s delta variant should make you ‘think … October 18, 2021 Biden’s speech comes as Israel says the shot developed by BioNTech SE BNTX, -0.25% and Pfizer Inc. PFE, -0.68% is now thought to be 64% effective at preventing infections from COVID’s delta … https://www.marketwatch.com/story/biden-to-speak-tuesday-afternoon-on-covid-response-vaccinations-11625579834