According to WebMD, the recovery time for pneumonia depends on many factors and can take two to three weeks in healthy individuals and up to six to eight weeks in individuals with other health issues. Symptoms of pneumonia may appear anywhere from one to 10 days after exposure.
The recovery time for pneumonia depends on the age and health of the patient, whether the infection was caused by bacteria or a virus, how quickly it is treated and the patient's immune system. In healthy patients with no pre-existing conditions and with strong immune systems, the disease may be mild and show few symptoms. In patients who are older or who have compromised immune systems, the disease can last up to eight weeks and present with severe symptoms, states WebMD.