A Adanali New member 8 May 2022 #1 COVID: Omicron subvariants 'escaping the previous immunity'You may be at risk of catching the new subvariants BA.4 or BA.5 even if you had the original omicron, virologist Alex Sigal told DW's Science Unscripted.
COVID: Omicron subvariants 'escaping the previous immunity'You may be at risk of catching the new subvariants BA.4 or BA.5 even if you had the original omicron, virologist Alex Sigal told DW's Science Unscripted.
