More than 250,000 people could contract polio every year if Nigeria, India, Pakistan and Afghanistan fail to eradicate the crippling virus, public health experts said.

Contaminated fresh tomatoes served in restaurants were the cause of a recent salmonella outbreak that sickened dozens of people in 21 states, health officials said Friday.

Reuters - A test can help doctors determine which lung cancer patients will respond to a leading chemotherapy drug and avoid ineffective treatments and side effects in those who don't, Spanish researchers said on Monday.