title: Thrombocytosis at an early stage of respiratory tract viral infection.
abstract: OBJECTIVE
  To determine whether thrombocytosis, a platelet count of more than 500 x 10(9)/l, occurs at an early stage of respiratory tract viral infection.
  
  
  METHODS
  The medical records of 345 patients with respiratory syncytial virus (RSV), influenza, measles, adenovirus or human herpes virus 6 infections were retrospectively reviewed.
  
  
  RESULTS
  The mean platelet count was significantly higher in RSV patients than in patients with other respiratory infections. Among the 29 patients with thrombocytosis, 24 (82.8%) had RSV infection.
  
  
  CONCLUSIONS
  When thrombocytosis is positive at an early stage of respiratory tract infection, RSV should be taken into account as a causative agent.
authors: Department of Paediatrics, Kobe City General Hospital, Kobe, Japan. mkubota@kcgh.gr.jp
authors: Masaru
authors: M
authors: Kubota
authors: Haruko
authors: H
authors: Maeda
authors: Jun
authors: J
authors: Yoshimoto
authors: Kenichiro
authors: K
authors: Kobayashi
authors: Ikuya
authors: I
authors: Usami
authors: Koji
authors: K
authors: Yamaoka
mesh_terms: D006801:Humans; D010976:Platelet Count; D018357:Respiratory Syncytial Virus Infections / Q000175:diagnosis; D012141:Respiratory Tract Infections / Q000150:complications* / Q000175:diagnosis*; D012189:Retrospective Studies; D013922:Thrombocytosis / Q000209:etiology*; D014777:Virus Diseases / Q000150:complications* / Q000175:diagnosis*