Field Epidemiological Investigation
Epidemiological characteristics of natural focus and vector borne infectious diseases in Zibo City Shandong Province between 2004 and 2015
Ling Wang, Ping Wang, Tao Wang, Ling Zhang, Shuxia Yang, Feng Cui, Zhiqiang Wang, Wenji Zhai, Xianjun Wang, Shujun Ding
Published 2017-06-20
Cite as Chin J Endemiol, 2017, 36(6): 428-433. DOI: 10.3760/cma.j.issn.2095-4255.2017.06.009
Abstract
ObjectiveTo analyze the incidence trends and epidemiological characteristics of natural focus and vector borne infectious diseases in Zibo City between 2004 and 2015, and to provide evidence for control and prevention of the diseases.
MethodSurveillance data of natural focus and vector borne infectious diseases in Zibo City between 2004 and 2015 from "the National Disease Reporting Information System" were analyzed via descriptive epidemiological methods.
ResultsA total of 10 natural foci and vector borne infectious diseases and 3 287 cases including 55 death cases were reported in Zibo City from 2004 to 2015. The average annual incidence was 6.24/100 000 and the case fatality rate was 1.67% (55/3 287). The incidence rate increased in recent years after the lowest rate in 2009 (2.83/100 000), and the rate in 2015 was 8.83/100 000. The top three diseases with higher incidence were hemorrhagic fever with renal syndrome (3.44/100 000), brucellosis (1.48/100 000) and tsutsugamushi fever (0.53/100 000). The top three high-prevalence areas with higher incidence were Yiyuan County (13.22/100 000), Zichuan District (9.73/100 000) and Boshan District (6.13/100 000). The cases mainly occurred from March to May and September, October, which accounting for 27.47% (903/3 287) and 24.64% (810/3 287), respectively of the total. The 40-59 year-old age group was the highest, accounting for 48.13% (1 582/3 287) of the total. And 75.48% (2 481/3 287) of reported cases were farmers.
ConclusionsThe overall incidence of the natural focus and vector borne infectious diseases in Zibo City has a annual increasing trend in recent years, while the incidence of brucellosis and tsutsugamushi fever have continued to rise since 2004. These diseases have showed a significant seasonal distribution and population distribution. It is necessary to conduct targeted prevention and control strategies.
Key words:
Natural focus diseases; Vector borne infectious diseases; Epidemic characteristics
Contributor Information
Ling Wang
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Ping Wang
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Tao Wang
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Ling Zhang
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Shuxia Yang
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Feng Cui
Department for Infectious Disease Control and Prevention, Zibo Center for Disease Control and Prevention, Zibo 255026, China
Zhiqiang Wang
Department for Viral Infections Disease Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
Wenji Zhai
Department for Viral Infections Disease Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
Xianjun Wang
Department for Viral Infections Disease Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
Shujun Ding
Department for Viral Infections Disease Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
