Mary Mallon was credited with directing spreading typhoid to at least 50 people, and three of them died.

玛丽·梅伦被认为是将伤寒传播给至少 50 人的罪魁祸首，其中 3 人死亡。

The first way is direct spread, which is when a pathogen gets inside the skull or spinal column, and then penetrates the meninges, eventually ending up in the CSF.

第一种方式是直接蔓延，这是当病原体进入颅骨或脊椎内部，然后穿过脑膜，最终进入脑脊液。