https://www.who.int/news/item/14-04-2023-report-of-the-meeting-of-the-who-technical-advisory-group-on-covid-19-vaccine-composition-(tag-co-vac)-held-on-16-17-march-2023
<p>In June 2022, the TAG-CO-VAC published an interim statement highlighting that index virus-based vaccines continued to confer high levels of protection against severe disease caused by all SARS-CoV-2 Variants of Concern (VOCs), including Omicron. However, g…
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