arthurus wrote: “Keep your Vitamin D blood levels up. You may still get he CCPFlu but it will not be serious enough to send you to the ER. Everyone admitted tests low vitamin D.”
Which does not prove that high Vitamin D prevents COVID. You’re confusing correlation with causation.
No. D probably does not prevent CCP but it will ameliorate it. I know quite a few people now who have been taking D3 for a few years and who got it in Feb-March last year. None had it as bad as normal bouts of flu. One went to the doctor with pneumonia and he cleared that up with normal treatment, an antibiotic and an albuterol inhaler.
Việt Nam is pretty close to tropical and has a high sun all year around. The only people who normally get seasonal flu- which is all year in Việt Nam- are women who still dress traditionally and never let the sun strike their skin because they have heard from their mothers since birth, "Never let the sun ouch your skin or you will turn black and never get a husband." With the younger ones now all adopting western fashions with bare arms and legs and getting their mothers to do it, too, flu is declining precipitously. The government is merely copying what other countries not so blessed with high sunshine are doing. The Cúm Vũ Hàn i.e. COVID is still in the low thousands of hospitalizations and the low hundreds for deaths which could probably have been mostly prevented by merely putting their clinic beds outside on the sidewalk in the daytime. One thing noted by the doctors in America during the 1918 pandemic was that patients who were put outside did better than those ho stayed in.