Mono is highly contagious when you have symptoms, but it can also be contagious long before and after the signs of sickness are present.

“We are social creatures who learn from others,” says Arash Javanbakht, a psychologist at Wayne State University and author ...

The word 'contagious' has evolved from describing physical illnesses spread by touch to encompassing the rapid transmission ...

An ongoing outbreak of hand, foot and mouth disease has affected more than 30 schools and childcare centers in the state, ...

How shared stress is syncing our emotions — and six simple practices that will spark a seismic shift toward civility, compassion, and connection.

The XFG COVID-19 variant, aka "Stratus," is spreading rapidly in the U.S. as cases climb. Here's what to know about symptoms of the newly dominant strain ...

An outbreak of measles at the Arizona-Utah border has grown to 123 cases and seven hospitalizations, new data shows.

Good moods can be contagious. Humans often adopt the mood of fellow humans. Other mammals, and even some other non-mammalian ...