title: [Epidemic situation and surveillance on SFTS in China, 2011-2012].
abstract: OBJECTIVE
  To analyze the data of surveillance on severe fever with thrombocytopenia syndrome (SFTS), from 2011 to 2012 in China.
  
  
  METHODS
  Descriptive methods were conducted to analyze the surveillance data from 2011 to 2012 which were collected from the internet-based National Notifiable Disease Reporting System.
  
  
  RESULTS
  From 2011 to 2012, a total of 1229 SFTS cases and 107 deaths were reported in China with the average annual incidence rate of 0. 046/100 000 and case fatality rate of 8.7%. Compared to 2011, morbidity of 2012 has increased by 23.5% and mortality has decreased by 32%. 16 provinces reported SFTS cases. More cases occurred in spring and summer seasons,with the peak in May to July, during this period, 69% of the total cases were reported. The ages of the patients ranged from 1 to 85 years, 44.2% of total case was 55 to 70 years old, there were no differences in sex. Of all the cases 86. 8% was farmer.
  
  
  CONCLUSIONS
  Severe fever with thrombocytopenia syndrome in widely distributed in China, especially in the central and eastern regions, the incidence has obvious seasonal. Surveillance and immigration quarantine should be strengthened.
authors.affiliation: National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Qu
authors.affiliation: National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Zhang
authors.affiliation: National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: Jian-Dong
authors.initials: JD
authors.lastname: Li
authors.affiliation: National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: De-Xin
authors.initials: DX
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D058872:Epidemics; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010217:Phlebotomus Fever / Q000453:epidemiology* / Q000401:mortality / Q000821:virology; D016856:Phlebovirus / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D018571:Sentinel Surveillance; D055815:Young Adult