Briefing from UK Health Security Agency titled SARS-CoV-2 variants of concern and variants under investigation in England Update on hospitalisation and vaccine effectiveness for Omicron, dated 31/12/2021.
ਮੋਡੀਊਲ 3 ਜੋੜਿਆ ਗਿਆ:
• Pages 3-4 on 26 September 2024.