Bivalent Covid-19 Vaccines — A Cautionary Tale.
List of authors. Paul A. Offit, M.D New England Journal of Medicine January 23, 2023 in Wuhan, China. Two months later, the original strain of SARS-CoV-2, called the Wuhan-1 or ancestral strain, was isolated and sequenced. It was now possible to make a vaccine. All the vaccines, including the mRNA vaccines made by Pfizer–BioNTech and […]