I have patients who are HIV-positive and asymptomatic.

我的一些艾滋病毒检测呈阳性的病人，没有任何症状。

This is called an “asymptomatic infection”.

这就是所谓的“无症状的感染”。

It can be completely asymptomatic, or only weak, palpitations and so on.

它可以完全无症状，或仅有乏力、心悸等。

The systematic application of a screening test in an asymptomatic population.

在无症状的人群中有条理地应用筛查检测。

The hemorrhages are typically asymptomatic and do not require any treatment.

典型的出血是无症状的，且不需要任何治疗。