but recovered SARS coronavirus patients from year 2002 still have T-cells that can not only kill SARS infected cells, but many can further kill today’s Covid-19 virus infected cells as well.
If that is the case, why was China's Covid19 infection/death rate so high? seeing they have had several SARS type outbreaks over the last 10-15 years....
In 2012 China had an virus outbreak at a mine in Yunnan province. It killed three male miners and sickened “several dozen” miner family members. This coronavirus was traced to “Horseshoe Bats” in abandoned parts of the mine, and was 99.8% similar to Covid-19.
China did not develop a vaccine despite the virus being proved fatal to humans.
China did share a sample of the virus with researchers from India, who decoded the RNA and published the gene sequence in a medical journal.
This was in a previous post in this thread by a long article in the Wall Street Journal by Matt Ridley.
Someone reading this post may have previously had one or more of the 4 circulating coronaviruses that are lumped iwith the many rhino and adeno family viruses called as a group “common colds.” This previous Infection may have resulted in having antibodies or T-cells that fight Covid-19 at least partially.
