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目的对西藏自治区2014年脊髓灰质炎(脊灰)野病毒(WPV)输入传播风险进行评估,识别WPV输入传播高风险地区,为制定应对策略提供依据。方法参考世界卫生组织和中国疾病预防控制中心推荐的WPV输入与传播风险评估标准对人群免疫、急性弛缓性麻痹(AFP)病例监测和WPV输入风险等指标进行评分,判断西藏各市(地)WPV输入传播的风险水平。结果那曲、昌都、拉萨、日喀则、林芝为WPV输入传播高风险地区,山南、阿里为中风险地区。风险主要表现在部分地区的人群免疫水平低和AFP监测薄弱。结论西藏存在WPV输入传播的风险,应针对不同风险地区采取提高人群免疫水平、保证AFP病例监测质量等针对性措施,防止WPV输入传播。
Objective To assess the risk of transmission of imported poliovirus (WPV) in 2014 in Tibet Autonomous Region and identify the high-risk areas where WPV is imported and transmitted in order to provide a basis for the development of coping strategies. Methods The indicators of population immunity, acute flaccid paralysis (AFP) surveillance and risk of WPV input were scored according to the WPV risk assessment criteria recommended by the World Health Organization and China Center for Disease Control and Prevention to determine the WPV input Spread the level of risk. Results Nagqu, Qamdo, Lhasa, Shigatse and Nyingchi were high-risk areas for WPV input and transmission, and Shannan and Ali were intermediate-risk areas. The risk is mainly reflected in the low population immunity and weak AFP surveillance in some areas. Conclusion There is a risk of WPV transmission in Tibet. Targeted measures should be taken in different risk areas such as raising population immunity, ensuring the quality of AFP case surveillance, and preventing WPV transmission.