Your gut microbiome (where your immune system is located) determines whether you will get a COVID19 infection severe enough to require hospitalization
https://www.sciencefocus.com/news/hospitalised-patients-with-covid-19-have-compromised-gut-microbiomes-study-finds/
Hospitalised patients with COVID-19 have compromised gut microbiomes, study finds
Researchers found fewer friendly bacteria known to support our body’s immune system in people who had been to hospital after a COVID-19 infection.
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