Trends from around the world suggest that the omicron BA.2 subvariant is increasing in proportion to the original BA.1 subvariant. Here we report two cases of co-infection with omicron BA.1 and omicron BA.2 in co-exposed individuals. In both individuals, genome sequencing and/or S-gene specific PCR identified omicron BA.1 at early time-points, which was replaced by omicron BA.2 at later time-points of the infection. The timeline of our data supports the proposition that BA.2 outcompetes BA.1 in a real-life scenario, and in time becomes the dominant variant in the upper respiratory tract of the host.
Keywords: COVID-19; SARS- CoV2; co-infection; next-generation sequencing; omicron.
Copyright © 2022 Gjorgjievska, Mehandziska, Stajkovska, Pecioska-Dokuzovska, Dimovska, Durmish, Ismail, Pavlovska, Stojchevska, Amedi, Andonova, Nikolovska, Velickovikj, Mitrev, Kungulovski and Kungulovski.