“American medics officially registered their first Covid-19 patient on January 19, 2020, but the findings in a paper published in the journal Clinical Infectious Diseases suggest the virus may have been circulating in the US prior to that.”
“The researchers studied almost 7,400 blood donations made in nine US states between December 13, 2019 and January 17, 2020. Evidence of Covid-19 bodies antibodies, the presence of which suggest a person had contact with the virus, were present in 106 of those samples, according to the study.”
“This means coronavirus could have been in the US a month before it saw its first confirmed case, and weeks before the Chinese authorities announced the infection in the city of Wuhan.”
WELDED DOORS SHUT
I'm not sure what this is referring to, but I'm guessing the conspiracy theory is that China welded the research labs' doors shut so its scientists couldn't warn the world of COVID?
Nah, welding doors shut of apartments to enforce quarantine.