Can you catch COVID-19 again? Doctor warns omicron BA.5 subvariant escapes immunity
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.
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Can you catch COVID-19 again? Doctor warns omicron BA.5 subvariant escapes immunity
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