pertussis

基本解釋

California is now in the middle of the worst outbreak of pertussis in half a century.
加州目前正処於半個世紀以來最嚴重的百日咳爆發(fā)中。
Herd immunity requires high immunization rates—around 95 percent for highly contagious infections like pertussis and measles.
對於像百日咳和麻疹這樣的高傳染性疾病，免疫屏障要求的免疫率高達95%左右。
It is also used during production of specific vaccines, for example certain pertussis (whooping cough) vaccines, as part of the manufacturing process that makes the product safe and effective.
作爲(wèi)生産過程中使産品安全有傚的組成部分，它也被用於特定疫苗的生産，例如，某些百日咳疫苗。

They were so effective and cost effective and yet immunization rates were on the decline if you look back 10 years ago, However,she says in the last nine years, immunization rates for such diseases as diphtheria, tetanus and pertussis have risen sharply.

In infants and very young children, pertussis causes violent, spasmodic coughing that repeats over and over.
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The pertussis (whooping cough) vaccine has been failing us, because immunity against it fades.
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