https://www.news-medical.net/news/20220905/Are-current-COVID-19-vaccines-in-England-effective-against-severe-BA4-and-BA5-Omicron-sub-lineage-infections.aspx
Researchers investigated the vaccine efficacy of various COVID-19 vaccines against the BA.2, BA.4, and BA.5 sub-lineages of the SARS-CoV-2 Omicron variant.
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