Vaccines activate the immune system, training it to fight off certain viral and bacterial infections.
Vaccines aren’t just for kids. Thousands of adults go to the hospital each year for a serious (sometimes even deadly) disease they might have avoided if they had received the vaccination to prevent it.
HPV (human papillomavirus) is the most common sexually transmitted infection in the U.S., and it raises your risk for several different kinds of cancer.
Viral warts are viral infections of the skin that are most common on the hands and feet. Learn about symptoms and treatment.