Excessive heat can be both physically and emotionally draining. Besides being a nuisance, heat waves can also cause certain conditions to flare up.

Although tuberculosis (TB) is a preventable and curable disease, it still causes death and illness, especially in developing countries. And even developed countries are not out of the danger zone, particularly as immigration and travel help spread the disease. 

Most people get the flu vaccine for the obvious reason: to protect them from the flu. But there may be other benefits to the shot as well.

The rate of infection from the parasite Cyclospora (called cyclosporiasis) has been growing across the US this summer. In the past, the parasite has usually been associated with fresh produce, but officials are still investigating specific sources in the current outbreak.

Free-living amebae (FLA) are tiny creatures that can cause rare but serious infections in humans.  Now officials are allowing the use of an experimental medication in an attempt to quickly manage difficult-to-treat FLA infections.

There have been advances in HIV treatment in recent years, yet nearly half of all people infected with HIV experience life-changing, reduced brain function. New research suggests that exercise could make a big difference for these patients.

Giving birth is an amazing experience, but it's not walk in the park. A mother having an infection around the time of giving birth can raise the stakes for both mother and baby as well.

Measles is no longer a common problem in the US, but it still causes plenty of infections around the world. Americans who are travelling abroad can become infected and bring the disease back to the US, which seems to be the case in a measles outbreak in Texas.

The word Salmonella often brings to mind eating contaminated food, like chicken or eggs. But live poultry can also be a carrier for the bacteria and people can become ill through contact with these animals.