There are only two Asian countries where mask wearing was common. South Korea and Japan. Hardly anywhere in Asia got hit hard. One theory is that there is a lot

There are only two Asian countries where mask wearing was common. South Korea and Japan. Hardly anywhere in Asia got hit hard. One theory is that there is a lot more contact with bats, trading them which act as a reservoir, and providing some level of immunity. Obesity rates will be another big factor. Masks show very little evidence of having any effect whatsoever.