Ever wonder why COVID19 did not spread more extensively in China itself? Could be that Chinese people have chronic exposures to corona viruses and most have at least some cross immunity. Also still know very little about the genetic susceptibilty of individuals to this virus. Many were exposed, some became ill. Of those most recovered but many died. There must be unkown susceptibility/resistance genes that define a given individual’s propensity to become infected and the severity of infection. Much is still not known but needs to be understood about this disease and the relative vulnerability of humans.
RE: Ever wonder why COVID19 did not spread more extensively in China itself?
I wouldn’t say that at all. See here (just a few days ago) :
https://freerepublic.com/focus/f-news/3981552/posts
[EXCERPT]
Millions of people are currently confined to their homes in China as the regime races to contain its largest COVID-19 outbreak in months, driven by the spread of the Delta variant. The surge has caused concerns about the efficacy of Chinese vaccines against the highly infectious strain.
Chinese health authorities have blamed the Delta variant for a rise in infections spanning 14 provinces and including Beijing. The recent outbreak of COVID-19, the disease caused by the CCP virus, was first reported on July 20 in the eastern city of Nanjing, where nine airport workers were identified by routine tests.