Deeproot: Airline travel has a significant effect on the spread of influenza, a new study reports, raising the question of whether flight restrictions may be helpful in controlling a pandemic.

• 乘飞机外出对流行感冒的传播有很大的影响,一项新的研究表明,是否对飞机乘客的条件加以限制有助于控制感冒的全国性流行问题值得关注。