
The faster spreading BA.2 subvariant of Covid-19's Omicron variant accounted for 18.5% of Omicron cases examined over the past week, the Department of Medical Sciences reported.
Director-general Supakit Sirilak said on Tuesday that the department examined 567 Omicron cases from Feb 5 to 11 and found 18.5% were of the BA.2 subvariant and the rest BA.1.