Usually walking pneumonia does not prove to be fatal. Secondary complications might include sinus, dry cough and bronchitis. Hemolytic anemia, rashes on skin and severe pneumonia might be the other complications. Children tend to suffer from croup if timely treatment for walking pneumonia is not offered.

Walking pneumonia is contagious. The infection mainly spreads through the airborne particles that are ejected out from the infected person. Mycoplasma Bacteria are the main cause of this ailment.