Study reveals where first cases of COVID-19 outside China may have originated based on case travel histories
Web-based surveillance of the global spread of SARS-CoV-2 (the virus that causes COVID-19) during the first 11 weeks of the outbreak (Dec 31, 2019, to March 10, 2020), reveals that three-quarters (75/99) of affected countries ...
Jul 30, 2020
0
113