Abstract
Respiratory viral infections are the most significant cause of increased mortality and morbidity especially in immunocompromised people. Treatment with potent immunosuppressive medication is necessary for regulation in order to prevent rejection of solid organs and graft-versus-host disease.
A a consequence of this therapy, infections are more common. Respiratory viral infections are the most frequent and serious complications after hematopoietic stem cell transplantation (HSCT).
Despite increased methods of testing for viral pathogens, nearly 10% of pneumonia in HSCT recipients still remains "idiopathic pneumonia syndrome". Recently described human metapneumovirus could be one of the etiological agents of this syndrome.