How Well Does The Pfizer Vaccine Protect Against The Delta Variant? Here’s What We KnowScience / By dev2 / July 13, 2021 https://www.forbes.com/sites/roberthart/2021/07/13/how-well-does-the-pfizer-vaccine-protect-against-the-delta-variant-heres-what-we-know/?sh=1abfe4b3ff33