疫情 (yìqíng): This term refers to an epidemic or outbreak of a contagious disease within a specific population or area.
感染者 (gǎnrǎn zhě): This term means infected person. It is used to describe individuals who have contracted a disease.
防控措施 (fángkòng cuòshī): This term refers to preventive measures taken to control the spread of diseases, such as wearing masks, practicing good hygiene, and social distancing.