Pneumonia is a lung infection caused by a bacteria or virus. Itcan last 2-3 weeks and can often be treated at home. However, inbabies and the elderly, immediate physician care is needed, as itcan be potentially fatal in these populations. Pneumonia symptomscan vary depending on any other medical conditions you may have andwhat is causing the pneumonia. It is important to identify thesymptoms of pneumonia so that it can be treated early and notbecome serious.There are two types of pneumonia: bacterial and viral. Bacterialpneumonia symptoms usually come on suddenly. They occur after acold or flu and include a cough, fever, shortness of breath, chestand muscle pain and fast heartbeat. Other symptoms may includeweakness, tiredness, vomiting, diarrhea and serious chills (to thepoint where your