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.
ThanhPhero wrote: “In Việt Nam the country still has closed borders and the government tells everyone how bad the infestation has become....”
I suspect another causative factor is the general health of the Vietnamese population. I suspect heart disease is no where near as prevalent as in the US. I’ve never met an obese Vietnamese either. Comorbidities are simply not as prevalent as in the US.
Interesting, thanks.