Dr. Shapiro's Question of the Day VI by ShapiroA

Question 7

"In recent weeks since the rise of the B.1.617.2 variant, all _____ employees who have been hospitalized with COVID were not fully vaccinated."

If the B.1.617.2 variant doesn't ring any bells, that's no accident. This sentence comes from an August 2021 memo issued within what company, which chose its nomenclature advisedly?