"Coronavirus was in the United States earlier than the known weeks. A new study analyzed blood donation activities from December to early January 2019. This shows that the time of the coronavirus infection in the United States is earlier than previously thought. According to the publication on Monday According to a new government report in the United States, the emergence of the coronavirus is weeks earlier than scientists and public health officials previously thought, and before the public identification of Chinese cases.
The virus and the disease COVID-19 that it causes were first discovered in Wuhan, China in December 2019, but it was not until around January 20 that a traveler returning from China confirmed a COVID-19 case for the first time, and it was discovered in the United States
However, new findings published in the journal Clinical Infectious Diseases indicate that the coronavirus (formally known as SARS-CoV-2) infects people even earlier in the United States. "https://www.npr.org/sections/coronavirus-live-updates/2020/12/01/940395651/coronavirus-was-in-u-s-weeks-earlier-than-previously-known-study-says