An unusual case of thrombocytosis associated with concurrent cytomegalovirus and respiratory syncytial virus infection in an immunocompetent infant: possible roles of thrombopoietin and interleukin-6.

This is the case study of concurrent cytomegalovirus and respiratory syncytial virus infection in an infant who showed thrombocytosis, liver dysfunction and bronchiolitis. The combination of thrombocytosis with this co-infection is causally related to elevated levels of thrombopoietin and interleukin-6. This study represents the first such case ever recorded.