A combined mRNA vaccine, developed by Pfizer and BioNTech against SARS-CoV-2 with a mixture of the original strain of SARS-CoV-2 and BA.4 and BA.5 lineages of the omicron variant of SARS-CoV-2.
A combined mRNA vaccine, developed by Pfizer and BioNTech against SARS-CoV-2 with a mixture of the original strain of SARS-CoV-2 and BA.4 and BA.5 lineages of the omicron variant of SARS-CoV-2.