40% of COVID-19 patients may be asymptomatic as disease progresses
Read carefully: "UP TO 40%" and "MAY BE" are important details regarding testing for COVID-19
Seen on nextdoor post that is now deleted:
"DID you know that 40% of those who are testing positive for COVID-19 do not have any symptoms? You could be spreading COVID-19 to your friends and neighbors and not know it."