South Africa: BA.4 and BA.5 increasing as a proportion of sequenced cases *1 UPDATE*

An increasing share of South Africa’s Covid-19 cases are the BA.4 and BA.5 sub-lineages of the Omicron variant, suggesting those might have a growth advantage over others, Prof Helen Rees said on Thursday.  More...

WHO: BA.2 to remain classified as Omicron

Based on available data of transmission, severity, reinfection, diagnostics, therapeutics and impacts of vaccines, the group reinforced that the BA.2 sublineage should continue to be considered a variant of concern and that it should remain classified as Omicron.  More...