Cytomegalovirus and Pneumocystis carinii pneumonia in children with acquired immunodeficiency syndrome.

To ascertain the effect of cytomegalovirus (CMV) infection on the course of Pneumocystis carinii pneumonia (PCP) in children with acquired immunodeficiency syndrome (AIDS), we reviewed the charts of all children with AIDS who also had a lung biopsy specimen or a bronchoalveolar lavage specimen cultured for CMV at the time PCP was diagnosed. The data indicate that children with AIDS and PCP whose cultures are positive for CMV do not have a poorer prognosis during a first episode of PCP compared with children whose cultures are negative for CMV.