It should be borne in mind that in epidemics of some diseASes, such AS typhoid and cholera, vaccination is relatively ineffective.
应该记住,某些疾病如伤寒和霍乱流行采用免疫接种效果较差。
A hospital consultant said conditions were ripe for an outbreak of cholera and typhoid.
一位医院的专家医师说霍乱和伤寒爆发的条件已经成熟。
The result may be an increase in diseases such as cholera, typhoid, malaria and dengue.
结果可能是疾病增加,例如霍乱、伤寒、疟疾和登革热。
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