Pneumonia is an infection of the lungs caused by a virus. Symptoms of pneumonia differ by the cause, but some symptoms include chills, fever, fatigue, chest pain, sore throat, and coughing. Follow the links below to find WebMD's comprehensive coverage about how pneumonia is contracted, how to treat it, and much more.
Chemical pneumonia is an unusual type of lung irritation caused by poisons or toxins. Find out more.
Pneumonia Vaccine: Should I Get It?
Some people should protect their health by getting a pneumonia vaccine. Find out if you’re at risk for pneumonia because of your age, illness or injury.
What Is Pneumonia?
WebMD explains pneumonia, a contagious lung infection.
What is Walking Pneumonia?
WebMD explains what walking pneumonia is, how it is transmitted, and how to prevent catching this infectious type of pneumonia.