https://www.news-medical.net/news/20220804/What-is-the-severity-of-SARS-CoV-2-Omicron-BA4-and-BA5-variant-infections-in-relation-to-BA2-infections.aspx
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Researchers compared clinical outcomes of COVID-19 cases due to SARS-CoV-2 Omicron BA.2 and Omicron BA.4/BA.5 variants based on the Kaiser Permanente Southern California (KPSC) health records between April 29 and July 2, 2022.
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