The introduction of biologics and other treatments for RA has been great, but treatments do come with a downside. Since they suppress the immune system, they also increase your risk of infection. How do you treat your RA, while also boosting your immune system?

Learn more about valley fever, a strange and rare fungal infection of the lungs.

Substances in mosquito saliva trigger immune system responses that can increase the severity of the diseases they transmit, like Zika virus, West Nile, malaria, and dengue fever.

A report issued by the Centers for Disease Control and Prevention (CDC) suggests that one in three waterborne illness outbreaks in the United States between 2000 and 2014 could be traced to hotel pools or hot tubs.

The number of illnesses caused by mosquito, tick, and flea bites in the United States rose from 27,388 cases in 2004 to more than 96,075 cases in 2016, according to the latest Vital Signs report from the Centers for Disease Control and Prevention.

Results of a new study suggest the Epstein-Barr virus (EBV) increases the risk for seven diseases in some people who contract the virus.

It’s the age-old question of — sleep it out, or sweat it out? Which is the best for your body to heal?

From “Grey’s” to “Scrubs,” learn about how closely your favorite doctor TV shows mimic real-life medicine.

Can you get the flu after you’ve already had the flu? Is it too late to get your shot? We’ve tapped experts to answer these questions — and more.

The foods and supplements to load up on before, during, and even after a cold or flu.