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近几年来,在西班牙巴塞罗纳进行了沿海城市污水排放对海水污染程度的研究。病毒是海水的一个潜在污染物,水病毒可对人类健康构成威胁。肠道病毒在水中的存活时间比细菌长,故对粪便细菌常规检查不足以评价病毒污染。一项观察大规模接种脊髓灰质炎疫苗对周围海水中出现疫苗病毒株的影响的研究结果表明,人口稠密的巴塞罗纳城北郊区(巴达罗纳)海滨水域中分离出的病毒株发生性质改变,与野毒株(11%)或其他肠道病毒(22%)相比,疫苗毒株的相对比例(67%)增高。这种改变应予以重视。与其他
In recent years, a study of seawater pollution in coastal cities in Spain has been conducted. Viruses are a potential source of seawater and water viruses pose a threat to human health. Enterovirus survives in water longer than bacteria, so routine examination of faecal bacteria is insufficient to assess virus contamination. A study examining the impact of a large-scale immunization against poliovirus strains in the surrounding seawater showed that the nature of the virus isolated in the seashore waters of the populated northern suburb of Barcelona (Badalona) , The relative proportion of vaccine strains (67%) increased compared to wild-type (11%) or other enteroviruses (22%). Such changes should be taken seriously. And other