SARS-CoV-2 has the ability to combine parts of previous strains, creating new variants. Here we describe a recombinant of two Omicron strains, given the preliminary designation Omicron BA.4.
An Omicron-Omicron Recombinant—BA.4
SARS-CoV-2 has the ability to combine parts of previous strains, creating new variants. Here we describe a recombinant of two Omicron strains, given the preliminary designation Omicron BA.4.