I think it is fairly obvious that this virus could have circulated considerably earlier than the first confirmed cases in Wuhan mid November 2020, given its nature of asymptomic spread and form of disease which easily could be mistaken for something else.
The work with blood sample analysis should be done all over the planet and its range should be broadened to samples earlier than January 2020.
The work with blood sample analysis should be done all over the planet and its range should be broadened to samples earlier than January 2020.