As if it weren’t bad enough that it’s flu season, a new strain of stomach virus from Australia has made its way to America, and it’s triggering a wave of gastrointestinal illness.

Hand sanitizer is all over the place: restaurants, grocery stores and almost everywhere else, making bacteria out as the bad guy. But not all bacteria are bad. Eliminating 'good' bacteria can lead to trouble , especially those in the colon.

This week, the US Food and Drug Administration announced approval for Fulyzaq , a drug designed to treat symptoms of diarrhea in HIV/AIDS patients. It's the first drug for this purpose to win FDA approval.

There is a history of prescribing antibiotics to patients with hip and knee implants before they have any dental work done. There are concerns that this could help reduce the risk of bacteria entering the blood stream and affecting the implants. 

If potty training isn't going well with "Number 2" but the bladder is under control, it may be a sign your child has a problem with his or her bowels.

It's an endless cycle: strong medications beat the germs, then the germs that survive grow again and beat that medication. Drugs are constantly being improved to combat these super bugs.

There may be more to home field advantage than just familiar surroundings and local fans. Crossing a few time zones more than doubled some athletes’ sick days.

You've been told to floss at least once a day to keep your gums healthy. Keeping gum disease and inflammation out of your mouth could do more than improve your smile.

People taking immunity-suppressing drugs are currently advised against the live-virus shingles vaccine because there is concern that it could lead to shingles, for this population.

Summertime is just around the corner, and dog days at the beach may be part of many families' vacation plans. But parents may be wondering about how clean the water is. Water-testing technology so far has been inadequate in testing for bacteria because it's not accessible enough to check all swimming spots or it can't keep up with quickly changing conditions at some sites. Now a new, faster method for testing may be available from researchers whose paper strip method can detect E. coli in minutes. Check for safe and clear beaches ahead of time. Lead author John Brennan, a ch...