Pfizer Chief Scientific Officer: after six months there likely is the risk of coronavirus reinfection as antibodies wane

Pfizer Chief Scientific Officer Mikael Dolsten said the recently reported dip in the vaccine’s effectiveness in Israel was mostly due to infections in people who had been vaccinated in January or February.  More...

CDC: Allergic reactions including anaphylaxis after receipt of the first dose of Pfizer-BioNTech coronavirus vaccine

“During December 14–23, 2020, monitoring by the Vaccine Adverse Event Reporting System detected 21 cases of anaphylaxis after administration of a reported 1,893,360 first doses of the Pfizer-BioNTech COVID-19 vaccine (11.1 cases per million doses); 71% of these occurred within 15 minutes of vaccination.”  More...

Italian vaccinated with Pfizer/Biontech vaccine is infected with Brazilian coronavirus variant 501YV2

A health professional at a hospital in L’Aquila, Italy, was infected with the variant Brazilian P.1 of the new coronavirus, even after being immunized with the vacina pharmaceutical company Pfizer in partnership with BioNTech.  More...