Duration of Walking Pneumonia
Given the mildness of the problem, walking pneumonia lasts for a few days; about a week, after the treatment is started. Note that this condition is known to last longer than the average cold or flu. However, if left untreated, the duration may get stretched to as long as a couple of months. But even after the condition resolves, the person may still suffer from a cough that may last for a month or so.