Experts reveal the signs that you're no longer at risk of spreading illnesses like COVID, flu and strep throat to others.

Doctronic reports you are contagious with the flu one day before symptoms and up to seven days after. Practice hygiene and isolate to protect others.

Individuals infected with the coronavirus are most contagious once they’ve started displaying symptoms of the illness, but science still isn’t sure whether it can be spread while it’s incubating — and ...

COVID-19 infections are rising again across the U.S. Here's which symptoms to look for and how to protect yourself over the ...

"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 ...

The symptoms of COVID-19 have changed over time. Here, infectious disease doctors share what many people are experiencing with the latest variant.

Flu, COVID and seasonal colds are all circulating this winter, and their symptoms can be surprisingly similar. Here’s how to ...