Israel will roll out a booster dose of the Pfizer-BioNTech COVID-19 vaccine to older people, citing a drop in protection against severe disease driven by the Delta variantBusiness Insider • 07/29/21
Pfizer says immunity drops to 83% within six months in people who got its COVID-19 shot, further bolstering the company case for a boosterMarket Watch • 07/29/21
Pfizer Inc. (PFE) CEO Albert Bourla on Q2 2021 Results - Earnings Call TranscriptSeeking Alpha • 07/29/21
Third Dose Of Pfizer-BioNTech's COVID-19 Vaccine Boosts Protection Against Delta Variant, New Data RevealsBenzinga • 07/28/21
Pfizer sees COVID-19 vaccine revenue rise, expects to deliver 2.1 billion doses in 2021Fox Business • 07/28/21
Here's What the Surge in COVID's Delta Variant Could Mean for Pfizer's StockThe Motley Fool • 07/28/21