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Surveillance results of suspected adverse events following immunization in Mianyang City from 2015-2016
Pages: 2576-2579
Year: Issue:  18
Journal: Occupation and Health

Keyword:  Suspected adverse events following immunizationVaccineSurveillance;
Abstract: [Objective] To analyze the surveillance results of suspected adverse events following immunization (AEFI) in Mianyang City from 2015-2016,provide the basis for further improvement of AEFI surveillance.[Methods] The data of AEFI cases in Mianyang City from 2015-2016 were collected and analyzed by the descriptive epidemiological method.[Results] Totally 1 338 AEFI cases were reported in Mianyang City from 2015-2016,and the incidence rate was 43.08 per 100 000 doses.There were 316 cases caused by diphtheria-pertussis-tetanus (DPT) vaccine (no-cells),which accounted for 23.78%.The normal reactions accounted for 88.94% of total cases,mainly including fever,redness and swelling,and scleroma.The abnormal reactions accounted for 8.37%,which the main clinical symptom was allergic skin rash.Children less than one-year-old accounted the largest proportion (38.71%),and the peak season appeared May to August.86.17% of cases occurred the reaction within the first day after vaccination.99.55% of cases were reported within 48 hours,99.35% were investigated within 48 hours,and the timely reporting rate of investigated card was 95.45%.[Conclusion] The sensitivity of AEFI surveillance system in Mianyang City has been improved.The surveillance should focus on children less than one-year-old and the first day after vaccination.To strengthen the training of grass-roots staff and improve the quality of AEFI surveillance are the keys of AEFI surveillance in the further.
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