pertussis immunization
... pertussis toxin 释义:百日咳毒素 pertussis immunization 释义:百日咳免疫法 Hemophilus parapertussis 释义:副百日咳嗜血杆菌 ...
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幼儿百日咳发病率的下降,是与广泛使用一种适宜的免疫法直接有关。
The fall in incidence of whooping cough in the very youg is directly related to widespread immunization with suitability.
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