Although their makers may tout them as a healthier alternative to smoking, e-cigarettes have potential harmful effects — including increasing the strength of deadly bacteria in the body.

Health officials around the nation have been on alert after the first US case of MERS was reported on May 2. Now, 10 days later, officials are reporting a second case.

The mere thought of a parasitic infection is enough to give some people the shivers, but according to a new report, we may need to devote more time to focusing on these conditions.

Some diseases that have been largely eradicated in the US still present big threats on a global scale. This is the case for polio, health officials warned this week.

The first MERS patient in the US was discovered late last week, to much concern from health officials and the public. But no further signs of the virus' spread have been seen in the US.

The MERS virus has been under the close watch of health officials around the globe since it first started causing infections in 2012. This week, the first US patient was discovered.

A urinary tract infection in a child can become very serious if not treated. Those who repeatedly experienced UTIs with a fever may have an underlying condition.

Vaccines are designed to protect against disease, but babies cannot get most vaccines until they're two months old, leaving them vulnerable. A vaccine during pregnancy may help.

Antibiotic resistance has been getting more and more attention in this country as more experts warn against it. Now, a major report has examined the problem on a worldwide scale.

HPV is perhaps most notorious for its link to cervical cancer, but it can also contribute to some kinds of oral cancer. A new study explored the spread of these conditions among partners.