COVID-19 spreads from an infected person to others through respiratory droplets and aerosols that can vary in size, such as: large droplets that fall to the ground rapidly (within seconds or minutes) ...

COVID-19 rapid tests may be used to help quickly identify and isolate people who have COVID-19. This includes people who don't have any symptoms. Always follow the instructions contained in your test ...

According to the CDC, mild to moderate cases of COVID-19 remain infectious no longer than 10 days after symptom onset. If you test negative on a rapid antigen test, make sure to get tested again a few ...

The fifth wave of the coronavirus pandemic has swept through Hong Kong like a tsunami and many more cases are expected in the months ahead. The University of Hong Kong has estimated the outbreak ...

COVID-19 most commonly spreads through the air when a person with COVID-19 breathes out small particles and respiratory droplets and other people around them breathe them in. Respiratory droplets can ...