These are cases in which a worker is infected with HIV and has a history of occupational exposure, but did not have a test immediately before and after the possible exposure.

以下是某些具有职业接触史，并感染了HIV病毒的工作人员的病例，但他们在可能受感染的接触之前和之后都没有立即进行检测。

youdao

One million cases of AIDS have been reported to the WHO, 19.5 million people have been infected with HIV since the epidemic began

自从艾滋病开始流行，已有1950万人感染HIV，WHO已经收到100万份艾滋病病例报告。

youdao

Of the 877 couples that delayed art, the researchers found 27 cases of an HIV-infected patient passing the virus to a previously uninfected partner.

在延迟抗病毒治疗的877对夫妇中，研究者发现27例HIV感染个案把病毒传染给此前未感染的伴侣。

youdao