The emergence of deadly flu strains like avian flu and H1N1 can quickly become worldwide epidemics. That's why researchers try to find dangerous strains before they can spread.

If you're a sexually active teen, your doctor should offer to test you for HIV at least once by the time you're 18. That's the new recommendation from the American Academy of Pediatrics.

If you’re pregnant, getting a flu shot is a good idea. Not only can it help you ward off the seasonal flu, it also will help protect your baby from infection - and it won’t cause miscarriage, say studies that will be released this week.

For the past 30 years, scientists have had no success developing a vaccine for AIDS. Their track record may change with the discovery of a powerful new anti-HIV antibody.

The autumn can bring all sorts all cold, allergy and sinus symptoms. The nose during this time of year seems often to be either runny or stuffed up.

Patients living longer with HIV/AIDS are at risk to develop a condition called HIV-associated dementia (HAD). Scientists have discovered that some people diagnosed HAD actually have two genetically different HIV types in their bodies, hiding in a place where HIV has never been seen before.

A new study estimates that 100,000 people in India have avoided HIV over the past five years, as a result of an prevention project targeting high-risk groups.

Urinary tract infections are thought to increase the risk of kidney disease in children. Yet, the evidence of this link is not strong and researchers are now challenging the notion.