We may not be able to see a big number of sex workers going for HIV screening.
我们可能无法看到大量的性工作者去接受 HIV 筛查。
英语百科
Diagnosis of HIV/AIDS
HIV tests are used to detect the presence of the human immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome (AIDS), in serum, saliva, or urine. Such tests may detect antibodies, antigens, or RNA.