Pneumonia is an infection that inflames air sacs, which may fill with fluid, in the lungs. Learn about symptoms and treatment.
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.
Vaccines activate the immune system, training it to fight off certain viral and bacterial infections.
Meningitis is inflammation of the brain and spinal cord membranes, usually caused by an infection. Learn about symptoms and treatment.