percent positive
noun [ singular ] US uk/pəˌsent ˈpɒz.ə.tɪv/ us/pɚˌsent ˈpɑː.zə.t̬ɪv/ (also positivity rate)
阳性百分比（即某一疾病的所有测试结果呈阳性的数量，以百分比表示）
the number of all tests for an illness that are positive (= show that someone has the illness), expressed as a number out of a hundred
A high percent positive means that more testing should probably be done. 阳性百分比高意味着可能应该做更多的测试。
The higher the percent positive is, the more concerning it is. 阳性百分比越高，就越令人担忧。
- More examples
- The laboratory test percent positive goes down when more people tested are negative.
- A low percent positive simply means that the level of coronavirus transmission, relative to the amount of testing, is low at this point in time.
- Expanded testing does not always reduce the percent positive when there is widespread transmission; it may reveal more people who are infected.