Most people who have coronavirus do not spread it to others - study
More than half "of SARS-CoV-2 infections in Hong Kong have been associated with at least one of 135 known clusters," the researchers wrote.
Health workers start the process to test people in a car as they use a newly approved saliva-based coronavirus disease (COVID-19) test at a testing site during the outbreak of the coronavirus disease (COVID-19) in Edison, New Jersey, U.S., April 15, 2020(photo credit: REUTERS/EDUARDO MUNOZ)ByOMRI RON
