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官方回应北京雾霾现耐药“超级菌”:对人体无害

2016-11-26 08:32:53   京华时报

北京雾霾净化塔,专家称,该塔每小时吸收的雾霾量还不到一勺盐的重量。

市卫计委

耐药性增加不意味着致病性增强

昨日,北京市卫计委援引专家观点解释称,在我们周围环境中,有大量的细菌存在,不仅在空气中,在口腔、鼻腔、呼吸道、胃肠道,都存在细菌或真菌,它们对人体是没害的,大量细菌和我们是共生共存的关系。

该专家指出,细菌的耐药性和致病性是完全不同的概念。耐药性的增加不意味着致病性的增强。人体自身具有免疫力,这些细菌大多数对正常人没有致病力,甚至有些细菌是有益的。

“人类的总数比以前增加了许多,寿命越来越长,是显而易见的。”他说。

■焦点

耐药菌是什么,来自哪里?

北大基础医学院免疫系教授王月丹表示,论文中所说抗生素耐药性基因指的应该是带有耐药基因的细菌,而不只是带有耐药基因的质粒。如果只是基因的质粒,那么就不存在危险,因为它不是生物体,不会传播,也不会导致疾病。

王月丹说,耐药菌的来源有很多可能,比如医院,比如基因工程生产过程,甚至普通人的肠道里都存在耐药菌。

“污水处理厂可能是耐药菌产生的重灾区。”国家城市环境污染控制技术研究中心研究员彭应登表示,污水处理厂在处理人体排泄物时会产生挥发性气溶胶物质,不可避免会携带微生物,包括耐药菌。耐药菌就这样随着气溶胶进入大气。

“对于污水处理厂周边空气是否存在耐药菌,其数量种类有多少,目前并没有监测。”彭应登表示,只能说是最大可能来源。

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