From the moment last spring when swine flu swept out of Mexico and triggered the world's first pandemic for 40 years, medical experts have emphasised the unpredictability of the influenza virus. Their refrain has been: “Expect the unexpected.”
今年春季,猪流感从墨西哥蔓延开来,触发了40年来的首次manbetx app苹果 流感大流行。自那一刻起,医学专家一直强调,流感病毒具有不可预测性。他们反复唱着同一个曲调:“准备好迎接意外状况吧。”
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