A06北京新闻 - 北京多家医疗机构增开新门诊

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Жители Санкт-Петербурга устроили «крысогон»17:52

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And though most scientists hail vaccines as one of public health’s greatest achievements, they have provoked fear, distrust, and contentious resistance since Edward Jenner invented the first vaccine, to prevent smallpox, in the late 1700s.

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