The epidemic situation and risk mapping of dengue fever in Quanzhou from 2011 to 2022
Objective To analyze the epidemiological characteristics of dengue fever in Quanzhou city from 2011 to 2022,explore the meteorological factors associated with the disease,and create a dengue fever risk map for Quanzhou city to provide guidance for the prevention and control of dengue fever.Methods The information of confirmed dengue fever cases in Quanzhou city reported through the China Disease Prevention and Control Information System from 2011 to 2022,as well as the meteorological data of Quanzhou city were collected and analyzed.The data was processed and analyzed using SPSS 25 software,and the risk map was created using ArcGIS 10.7 software.Results From 2011 to 2022,a total of 460 dengue fever cases were reported in Quanzhou city,mostly men(340 cases,accounting for 73.9％).Mainly concentrated from June to October,a total of 329 cases were reported,accounting for 71.5％.A total of 409 cases,accounting for 88.9％,were mainly imported from abroad.Most of them were from Southeast Asia,with the Philippines(170 cases)and Cambodia(178 cases)as the main import places.There were 15 domestically imported cases,with Guangdong(11 cases)having the most cases.There were 36 local cases,accounting for 7.8％.The towns(townships/subdistricts)with higher risk of imported cases were Shenhu town(19 cases),Longhu town(17 cases),Fengcheng town(16 cases),Qingyang subdistrict(15 cases),Jinjing town(15 cases)and Fengli street(15 cases).Meteorological images showed that the average annual precipitation in Quanzhou city from 2011 to 2022 had shown a gradual decrease from the northwest mountainous area to the southeastern coastal area,which was roughly the same as the trend of annual average humidity.The average meteorological raster map showed that the areas having annual average precipitation＞989.91 mm,annual average maximum temperature＞36.66 ℃,annual average minimum temperature＞2.95 ℃,annual average temperature＞21.10℃,and annual average humidity＞68.63％were the main risk areas having dengue fever in Quanzhou city from 2011 to 2022.Conclusion Areas such as Shenzhen town,Longhu town,Fengcheng town,Qingyang street,Jinjing town and Fengli street had a high risk of importing dengue fever cases,while the southeastern coastal region had a high risk of subsequent outbreaks after importation of the cases.
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