mass infection season

例句：

1. 1. The new vaccine has been shown to reduce the risk of mass infection in hospitals.
   新疫苗已被证明可以减少医院内大规模感染的风险。
2. 2. During the mass infection season, it's important to practice good hygiene habits.
   在大规模感染季节，重要的是要养成良好的卫生习惯。
3. 3. The outbreak was caused by a virus that spreads through airborne transmission during the mass infection season.
   这次疫情是由一种通过空气传播的病毒引起的，而在大规模感染季节，这种传播方式尤为常见。