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。

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Security experts have also been known to test a company's defences by leaving infected USB sticks lying around and seeing whether anyone picks them up out of curiosity.

大家或许听说，信息安全专家也曾测试过公司的防御系统通过下面的方式，把一个感染病毒的U盘丢落一旁，看看是否有人由于好奇心去捡起它。

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Their method, which USES IRT cameras to quickly identify potentially infected animals, is not intended to be a diagnostic test.

他们并没有打算让利用红外热成像摄像机快速鉴定可能受到感染的动物的方法成为一种诊断性检测方法。

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There, researchers are developing a test that uses human saliva instead of blood to find those infected with malaria.

VOA: special.2010.04.20

Both infected and vaccinated animals appear to test positive for TB so scientists are now looking at the the DIVA test (Differentiate Infected from Vaccinated Animals) as a way of telling the difference.

BBC: Cattle TB vaccine 'is years away', MP is told

This mishmash will let him decide where to send fieldworkers to test for infected birds, plotting the risk of the disease spreading and the chance of setting up a secure quarantine.

FORBES: Magazine Article

This mishmash will let him decide where to send field-workers to test for infected birds, plotting the risk of the disease spreading and the chance of setting up a secure quarantine.

FORBES: Map Mania