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群体免疫
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群体免疫
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医学
群体免疫
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herd immunity
群体免疫
根据某种传染病流行区域与人群发病等流行病学特点,在人群中进行大规模的疫苗或菌苗接种以预防和控制其传播流行的措施。又称社区免疫。
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response procedures
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Response to Lu Chen
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Responsibilities and Duties
responsibilities for work safety and haelth of principal leading members of production and business units
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responsibility and function of higher education institution
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