Analysis of samples taken from residents of the United States showed the presence of cases of COVID-19 in the country as of at least January 7, 2020. This became known to the portal Axios.
According to the National Institutes of Health (NIH), such data suggest that the coronavirus was circulating in the United States as early as the end of December 2019.
According to the portal, after processing more than 24 thousand blood samples taken in 50 states and dating to the period up to March 18, 2020, antibodies to the SARS-CoV-2 virus were found in nine samples вЂ” in the states of Illinois, Mississippi, Massachusetts, Pennsylvania, and Wisconsin. However, the antibodies were not found in the samples, which were related to the future centers of the epidemic in the United States-New York or Seattle.
At the same time, co-author of the study Shari Shulli noted that the results do not generally speak about the origin of the virus. The expert explained that the experts did not study the possibility that the persons from whom these samples were obtained had left the United States or had contact with people traveling outside the United States.
On May 20, the US said there was вЂњstrong circumstantial evidenceвЂќ that the first outbreak of the SARS-CoV-2 coronavirus was the result of a leak from a Chinese research laboratory. In turn, the Chinese authorities point to the possibility of a coronavirus leak from the US military laboratory at Fort Detrick.
An outbreak of COVID-19 pneumonia caused by a new type of virus was first reported in late 2019 in Wuhan, China. On March 11, 2020, WHO announced that the situation could be described as a pandemic. Chinese authorities and scientists have repeatedly questioned the version of the origin of the virus in Wuhan.