A Wisconsin congressman wants the Centers for Disease Control and Prevention to investigate a possible connection between Vitamin D and COVID-19.Subscribe to WISN on YouTube now for more:Get more Milwaukee news: Like us: Follow us: Instagram: CoronavirusCOVID-19COVID19defenseimmune systemIMMUNITYvideoVITAMINvitamin CoronavirusvlogYouTubeRelated 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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