How do vaccines offer protection against COVID-19? WebMD Chief Medical Officer Dr. John Whyte explains.Subscribe to WebMD:Follow WebMD: Website: Facebook: Pinterest: Twitter: Instagram: Coronaviruscoronavirus immunitycovidcovid vaccineCOVID-19COVID19herd immunityimmune systemIMMUNITYOfferProtectionVaccinevaccinesvideoVITAMINvlogVocabularyWebMDYouTubeRelated Posts What Happens When the Immune System Learns to Tolerate COVID? January 6, 2026 What Happens When the Immune System Learns to Tolerate COVID? January 5, 2026 So much #research happening!#covid19 #doctor #themoreyouknow #immunity #virus #antibodytesting January 3, 2026 Immune System vs. Viruses: Can We Ever Win? #shorts December 23, 2025 Probiotics, Immunity & COVID – Why I Waited for the Research December 19, 2025 Did Covid Change Your Brain? Doctor Explains December 17, 2025
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