(VOVWORLD) -The SARS-CoV-2 Omicron sub-lineage BA.5 has entered Vietnam and may overwhelm the old sub-lineage BA.2 which is dominant in the country, according to Prof....
(VOVWORLD) - The UK Health Security Agency on Friday designated a sub-lineage of the dominant and highly transmissible Omicron coronavirus variant as a variant under investigation, saying it could have a...