A top COVID researcher says he’s worried about the COVID-19 BA.5 subvariant. Doctors say it’s highly transmissible and responsible for several breakthrough cases. Pharmaceutical companies are working to develop variant-specific vaccines that may be more effective. https://www.fox4news.com/news/can-you-catch-covid-19-again-doctor-warns-omicron-ba-5-subvariant-escapes-immunity
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