B category infectious disease

例句：

1. 1. The outbreakof the B-category infectious disease has caused widespread concern.
   B类传染病的爆发引起了广泛的关注。
2. 2. The government has implemented strict measures to control the spread of the B-category infectious disease.
   政府已经实施了严格的措施来控制B类传染病的传播。
3. 3.The B-category infectious disease is highly contagious and requires immediate medical attention.
   B类传染病具有高度传染性，需要立即医疗关注。