The EMA has lifted restrictions on the chikungunya vaccine in people 65 and older, while warning that it should be used only when there is significant risk of infection.

You’re more likely to get sick if you come in contact with fresh mouse droppings in a poorly ventilated space. The risk and type of infection may also depend on your location.

Ivermectin, which is used to treat certain parasitic infections, can cause side effects. Learn about its mild and serious side effects and how to manage them.

Ulcerative colitis can affect more than just your gastrointestinal tract — it can affect your skin, too. Learn about symptoms and treatments for better skin health.