Pfizer’s (NYSE:PFE) CEO Dr. Albert Bourla acknowledged in a statement that he has COVID-19.  Bourla, who is 60, has received four doses of the Pfizer-BioNTech Comirnaty vaccine. He also has begun taking a course of the company’s antiviral Paxlovid.  The Pfizer CEO notes that symptoms to date have been very mild.   Pfizer’s revenue has soared during the…