re-infection, severe outcome more common with variant BA.5; Spike virus is a cytotoxic protein
A medical worker gives a dose of the Pfizer-BioNTech “Cominarty” coronavirus (COVID-19) vaccine to a patient at the vaccination center in Ancenis-Saint-Gereon, France, November 17, 2021. REUTERS/Stephane Mahe/File Photo/File Photo Register now to get free unlimited access to Reuters.com Register July 28 (Reuters) – Here is a summary of some recent studies on COVID-19. They …