Researchers studied blood samples from December 2019, and found a small number tested positive for antibodies against the virus.
Source: https://www.livescience.com/covid-19-united-states-december-2019.html
Only the Autodidact is Free
Researchers studied blood samples from December 2019, and found a small number tested positive for antibodies against the virus.
Source: https://www.livescience.com/covid-19-united-states-december-2019.html