"It's a waste of resources." Long after COVID patients stop being contagious, their body continues to slough off fragments of dead virus cells, sometimes triggering a "positive" reading from COVID ...

Even before Candace Palmerlee tested positive for the coronavirus, she began isolating herself at home, not wanting to pass the infection on to others. When her positive test result was confirmed on ...

A new study out of South Korea suggests that people who test positive for COVID-19 a second time may no longer be contagious. For the study, published Tuesday by South Korea's Centers for Disease ...

Studies have shown that people may be contagious for about two days before developing COVID-19 symptoms. In fact, right before developing symptoms is when people are likely the most contagious, said ...

NEW YORK -- As the highly transmissible omicron and delta coronavirus variants continue to sweep across the United States, health officials warn that more people are expected to get infected -- even ...

A positive COVID-19 test only tells you that you have the novel coronavirus in your body but cannot tell how contagious you are. Testing positive for COVID-19 means you have pieces of the virus in ...

When someone close to you tests positive for COVID-19, it’s natural to feel an immediate sense of urgency. The question that often follows is simple but critical: how long should you wait before ...