Omicron sub-variant BA.2 harder to identify, found in 5 African nations -WHO

The BA.2 sub-variant of Omicron has been found in five African countries, a World Health Organization scientist said on Thursday, adding she was concerned about the development because samples of BA.2 may not be spotted as a form of Omicron. The BA.2 sub-variant has begun to replace Omicron's more common 'original' BA.1 variant in countries such as Denmark. Data from there suggests no difference in disease severity, according to another WHO official