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| Analysis on pertussis antibody levels and epidemiological dynamics of the population in Weifang from 1956 to 2016 |
| Qiu Deshan1, Wang Hongmei2, Wang Yi1 |
1 Weifang Disease Control and Prevention Center, Weifang 261061, China;
2 People′s Hospital of Weifang Hi-tech Industrial Development Zone |
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Abstract Objective To understand the epidemic regularity and change trend of Weifang, and provide a scientific basis and strategies for the control of pertussis. Methods Descriptive epidemiological analysis was conducted on the data of pertussis epidemic in Weifang city 1956-2016. Results The pertussis incidence rate decreased by 97.73% in Weifang city since EPI, mortality decreased by 99.67%, fashion cycles disappeared, and a low prevalence and high emission trends maintained. From the cfromefomparison between 1979 to 1990 and 1991 to 2016, changes of the morbidity age constitution was not obvious (χ2=0.926, P=0.336). Incidence rates of scattered children and nursery children showed an ascendant trend, and students incidence decreased (χ2=88.547, 9.428, 127.459, P=0.000, 0.002, 0.000). For seasonal distribution, the incidences centralized from March to June (χ2=10.987, P=0.001). Conclusion Pertussis incidence rate has dropped to its lowest level in history in Weifang city, and the population has a higher antibody level. We should carry out leak detection and replantation of diphtheria-pertussis-tetanus triple vaccine for the key areas and crowds, improve the vaccination rate of medical institutions, strengthen personnel training and surveillance, in order to reduce the incidence.
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Received: 17 February 2017
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