An outbreak of an unusual strain of Salmonella that put 286 people into the hospital appears to be over in the United States, federal health officials said Thursday. Read more »

The head of Canada's biggest meat processor said Wednesday his company was fully accountable for a nationwide outbreak of listeriosis food poisoning, which has been linked to deaths of 15 people. Read more »

A new type of bird flu vaccine that uses a mock version of the virus appears to protect people against infection and is safe enough to continue testing, Novavax Inc. said Tuesday. Read more »

Parents refusing to have their children vaccinated against measles have helped drive cases of the illness to their worst levels in a dozen years in the United States, health officials reported Thursday. Read more »

A 61-year-old woman in central Japan has given birth to a surrogate child for her daughter, an obstetrician said Wednesday. Read more »

Stem cell scientists have developed a new and more accurate way of spotting aggressive forms of bowel cancer, allowing for tailored treatment that should improve patients' chances of survival. Read more »

Chewing gum after colon surgery appears to speed up the return of normal bowel function, British researchers said on Monday. Read more »

Just one can of the popular stimulant energy drink Red Bull can increase the risk of heart attack or stroke, even in young people, Australian medical researchers said on Friday. Read more »

Keep humming "Don't Worry Be Happy". The 1980s New Age-inspired hit got it right. New research shows being happy can add several years to life. Read more »

Bad reactions to antibiotics, mostly allergic ones, send people to U.S. emergency rooms more than 140,000 times each year, government researchers reported Wednesday. Read more »