Growing resistance to antimalarial medicines has spread very rapidly, undermining malaria control efforts.

对抗疟药物的耐药性日益严重，且扩散极快，影响了控制疟疾努力。

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Once international spread begins, pandemics are considered unstoppable, caused as they are by a virus that spreads very rapidly by coughing or sneezing.

一旦国际传播发生，大流行就难以遏制，因为病毒通过咳嗽或打喷涕，传播得非常迅速。

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To spread like wildfire the transmission method must be rapidly scalable from small to very large.

传递方式必须能迅速由小做大才能像野火一样飞窜。

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Because exposure to very few norovirus particles can result in infection, these organisms spread rapidly through confined communities such as dormitories, prisons and nursing homes.

FORBES: Magazine Article