自然自动免疫（natural active immunity）

互联网2013-11-14

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　　在自然条件下，人体被病原体感染后所获得的免疫力。这种免疫可以通过得传染病获得，也可经过隐性感染获得。如儿童患麻疹、伤寒后可获得抗麻疹、伤寒的抵抗力；再如儿童服用脊髓灰质炎减毒活疫苗后，在体内可形成由该疫苗引起的隐性感染，从而获得抗小儿麻痹症的抵抗力。

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