[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.

Conclusion: 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.