Abstract
Pulmonary infections are the most common cause of morbidity in the lung transplant population. Prompt recognition and treatment is necessary to prevent poor outcomes. An understanding of the temporal relationship between immunosuppression and the risk for developing infection can assist the clinician with appropriate treatment. Bacterial pneumonia is common within the first 4 months after transplantation whereas cytomegalovirus (CMV) infection or disease becomes prevalent after the discontinuation of prophylaxis in at-risk patients. Fungal infections, especially aspergillosis, can be fatal if not treated early and the risk for infection is present throughout the transplant period. Community-acquired viral infections present with upper-respiratory symptoms and wheezing that may lead to a chronic decline in lung function. Suspicion of a pulmonary infection in these immunosuppressed individuals should lead to an urgent diagnostic bronchoscopy and empiric antimicrobial therapy.
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