目前，新冠肺炎的毒性没有以前那么强了。最近很多地方的新疫情并不危急，专家解读病毒毒性减弱。现在很多地方很多病例都是无症状感染者，病毒已经减少到没有症状了。然而，即便如此，防疫工作也不容忽视。[详细]
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