This is the 174th most frequent Chinese word.
防疫
"Prevention and control of epidemics."
Here, "防疫" means implementing actions to prevent the spread of a disease.
政府要求居民配合防疫措施。
The government requires residents to comply with epidemic prevention measures.
In this sentence, "防疫" refers to activities related to preventing an epidemic.
社区正在组织防疫活动，以确保大家的安全。
The community is organizing epidemic prevention activities to ensure everyone's safety.
Here, "防疫" is used to describe the efforts and work done to prevent disease spread.