输入脊髓灰质炎野病毒 imported wild-type poliovirus
这期间，虽然口服脊髓灰质炎疫苗防止了超过650万起脊髓灰质炎病例的发生，但仍有33,000余名儿童因感染脊髓灰质炎野病毒株致瘫。
In the meantime, more than 33 000 children were paralysed by wild poliovirus while more than 6.5 million polio cases were prevented by the oral polio vaccine.
（in Chinese） 张颖，罗会明，温宁，等。 脊髓灰质炎野病毒输入传播风险评估工具的研究[J]。 中国疫苗和免疫，2013，19（1）：17-19。
Zhang Y, Luo HM, Wen N, et al. Study on assessment tool for wild poliovirus importation and transmission risk[J]. Chinese Journal of Vaccines and Immunization, 2013,19(1):17-19.
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