Air travel was a luxury and the movement of goods and people around the world was relatively slow," said Dr Guenael Rodier, WHO Director of Communicable Disease Surveillance and Reponse.

航空旅行在当时是一种奢侈，并且全世界物品和人员的流动比较缓慢，”世卫组织传染病监测和应对司司长Guenael Rodier博士说。

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Air travel was a luxury and the movement of goods and people around the world was relatively slow," said Dr Guenael Rodier, WHO Director of Communicable Disease Surveillance and Reponse.

航空旅行在当时是一种奢侈，并且全世界物品和人员的流动比较缓慢，”世卫组织传染病监测和应对司司长Guenael Rodier博士说。

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