Although covid-19 exact origins are still in dispute, it appears to be another case of the virus jumping from the animal kingdom into humans, like the bird flu or swine flu. It is almost certain it was a bat virus ingested by pangolins and passed on to humans, as Chinese medicine prizes pangolin scales (it is the only scaled mammal). It’s flesh is also prized.
Like hundreds of other extracts in Chinese medicine, this is based on unscientific, magical theory that you gain powers ingesting the beast you want to emulate. Bear bile is another prized medicine, though the active ingredient has been synthesized and there is no reason to torture bears to get it. Why this perverse fascination with destroying Nature?
A hidden positive effect of Corvid-19 is the immediate ban in China of such trade in wild life, where 900,000 pangolins were ground up and/or eaten last year. In February 2020, the Chinese government passed a law "prohibiting the illegal wildlife trade, abolishing the bad habit of overconsumption of wildlife, and effectively protecting the lives and health of the people."