Investigation of Confirmed Cases with Chikungunya Fever in Dongguan

[Objective]To analyze epidemic characteristics and clinical features of Chikungunya fever outbreak in Dongguan,providing references for prevention and control of the disease.[Methods] Field investigations was carried out to analyze ninety-two patients with Chikungunya fever in the demographic,environmental and temporal characteristics of the outbreak.[Results]There were totally 92 patients reported,of which 46.7% were male and 65.2% were aged 15 ～ 60.The epidemic community was located in the suburb of city with sub-tropical monsoon climate.The Breteau Index was 77 in the initial stage of the outbreak,and dropped down 5 at final phase.70.7% of the patients were clustered in Number 1 community,and were all distributed within a radius of 5 km.Patients with fever,arthralgia,and rash rates were 95.1%,82.9%,and 75.6%,respectively.[Conclusions]Chikungunya fever outbreak tends to be community-clustered.The sub-tropical climate and high Breteau Index are contributable to outbreak of CHIKV.The main manifestations of chikungunya are fever,arthralgia,and rash.