The flu can cause serious illness in people over 65, babies, and people with certain chronic illnesses. The best way to prevent the flu is to get a vaccine.| medlineplus.gov
There are many types of bacterial infections. Learn about bacterial infections that can make you sick and how to treat them.| medlineplus.gov
You call it barfing, puking, or throwing up; your doctor calls it vomiting. Read more about nausea and vomiting and the conditions that cause them.| medlineplus.gov
Diarrhea can range from mild to severe and can be dangerous in children. Find out what you can do to treat symptoms and when to call your doctor.| medlineplus.gov