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。
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。
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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