Parents who care for mentally-challenged children are prone to develop weak immune systems due to stress, new research suggests. The study concluded that such parents should be offered a better support system.

Researchers at Birmingham University analyzed 60 parents who received the pneumococcal vaccine as part of the study. Half of them had children with developmental disabilities

Researchers have developed a tobacco plant-based vaccine for patients with a chronic form of lymphoma, a specific type of cancer.

According to the first human study of the approach, researchers found that the vaccine could trigger an immune response in the body, which could lead to personalized vaccines that may kick start the patients' immune systems to attack the cancer

A vaccine aimed at reducing brain plaque didn't help cure Alzheimer's disease, researchers have found. The results of the five-year study disappointed scientists who believed that cutting down plaque levels in the brain would help reduce the symptoms of Alzheimer's.

The new research, led by Clive Holmes of Moorgreen Hospital in Southampton, looked at 80 patients with mild to moderate dementia. Researchers used amyloid-beta peptide on patients' brains to clear the plaque but results indicated that it didn't help patients live longer or slow the disease's progression

A human trial of a large-scale experimental AIDS vaccine has been cancelled following advice by a top scientist that it was unlikely to give useful results, the National Institutes of Health (NIH) said Thursday.

The vaccine trial, similar to a failed Merck and Co. product, was developed by the Vaccine Research Center at the National Institute of Allergy and Infectious Disease. In a study called PAVE 100, the agency planned to include 2,400 men in the United States

A measles outbreak affecting 120 people in 15 states has alarmed health officials as it's the largest outbreak to happen in the last 10 years, according to the Centers for Disease Control and Prevention.

U.S. health authorities believe that the measles outbreak is related to travelers coming back to the United States from other countries