Epidemiological characteristics of genital chlamydia trachomatis infection in Weihai,Shandong,2012-2021
Objective To explore the epidemiologic characteristics of genital chlamydia trachomatis(CT)infection in Weihai City and to inform the development of prevention and control strategies.Methods Data on genital CT infection cases reported in Weihai City from 2012 to 2021 were retrieved from the"China Disease Prevention and Control Information System".Descriptive epidemiological analysis was conducted on the collected data.Results A total of 4 385 cases of genital CT infection were reported in Weihai City over the ten-year period,with an average annual incidence rate of 15.55 per 100 000 population.The incidence initially increased and then decreased(X2trend(2012-2016)=134.31,x2trend(2016-2020)=76.46,P 均＜0.05),with a notable surge in 2021(20.44 per 100 000).Significant interannual variability was observed(x2=230.45,P＜0.05).Males accounted for 1 764 cases(40.23％)and females for 2 621(59.22％),with average annual incidence rates of 12.37 and 18.81 per 100 000,respectively.Both genders showed significant annual variabilities in reported incidence(x2=148.17,248.42,P＜0.05 for all).There majority of cases,3 419(77.97％),were in the 20-＜40 age group,with the highest average annual incidence in the 25-＜30 age group(6453 per 100000).The 15-＜20age group experienced the steepest annual increase in incidence(23.83％).The most commonly affected occupations were housework,commercial services,and farmers,with a total of 4 048 cases(92.32％),with farmers showing the highest annual increase(27.96％).Huancui District reported the highest number of cases and average annual incidence(3 378 cases,38.27 per 100 000),while Rushan City had the highest annual growth rate(30.41％).Conclusions The reported incidence of genital CT infection in Weihai City fluctuated over the study period,with a significant increase in 2021.Adolescents,unemployed,and farmers are identified as key populations for targeted screening,management,and health education initiatives.
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