immunological surveillance

例句：

1. 1. The researchers are conducting an immunological surveillance of the new virus.
   研究人员正在对新病毒进行免疫监测。
2. 2.The hospital is implementing a comprehensive system for immunological surveillance to prevent infections.
   医院正在实施一个全面的系统，用于免疫监测以防止感染。
3. 3.The government has launched an immunological surveillance program to track the spread of the disease.
   政府已经启动了一个免疫监测项目，以追踪疾病的传播。