The new findings suggest the virus may have been circulating in Illinois as early as Dec. 24, 2019.
If all the circulating SARS-CoV-2 particles were gathered together into one place, they would weigh somewhere between the weight of an apple and that of a young toddler.
Researchers in Israel say they've found a possible link between the Pfizer-BioNTech COVID-19 vaccine and cases of heart inflammation called myocarditis in young men.
Men with low testosterone levels may be more likely to have severe COVID-19, a small new study suggests.
The study is the first to follow children with the syndrome, called MIS-C, for as long as six months.
A new report finds that three Wuhan Institute of Virology staffers fell ill in November 2019, but it's not clear with what or how trustworthy the intelligence is.
Researchers developed a "pan-coronavirus" vaccine, designed to protect against many different strains of coronaviruses known to infect humans and bats.
The researchers detected the new virus in a sample obtained from a child diagnosed with pneumonia in 2018.
Visitors to a newly-restored shrine in the St. Albans Cathedral will be greeted by a carved stone face wearing a protective mask.
On Monday, the Food and Drug Administration extended emergency approval for the Pfizer-BioNTech COVID-19 vaccine to include adolescents.