MP is Mycoplasmal pneumonia. The incubation period lasts as long as three weeks. Caution needs to be exercised in patients with lowered immune systems. Komal, if your condition worsens, do not hesitate to contact your doctor. In most cases, the illness resolves on its own, but because thalassemia is involved, please be cautious and report any changes, especially any symptoms in your lungs, to your doctor immediately. I do not find and contraindication for desferal with PM. In fact, iron chelation has been studied in PM to see if it slows the rate of infection.