Respiratory Syncytial Viral Infection in Children with Compromised Immune Function

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Abstract
For 10 winters, 608 children five years old or younger who were hospitalized with respiratory syncytial virus (RSV) infection were prospectively studied to evaluate the relation between their immune status and the severity of their infection. Forty-seven had been immunocompromised by chemotherapy, steroid therapy, or a primary immunodeficiency disorder. Among the immunocompromised children, those receiving chemotherapy for cancer and those with immunodeficiency disease had more severe RSV disease, with pneumonia occurring at all ages, and a higher mortality rate. Children receiving long-term steroid therapy did not appear to have more severe clinical manifestations than normal children. Viral shedding, however, was significantly greater and more prolonged in the children receiving steroid therapy, and particularly in those receiving chemotherapy or with an immunodeficiency disease. Giant-cell pneumonia was documented in one child with leukemia. Over half the immunocompromised children acquired the RSV infection nosocomially.