The XBB is a highly contagious subvariant of COVID-19's Omicron strain, according to the World Health Organisation (WHO). The XBB variant had a higher reinfection risk, as compared to other circulating Omicron sublineages, the Dawn report said.
New Delhi [India], August 31 (ANI): Dr NK Arora, Chairman of the COVID working group, National Technical Advisory Group on Immunisation (NTAGI), on Wednesday said that COVID-19 is still around us and quite a significant transmission of viruses is going on.