The way the body recognises an infection is by examining molecules from the infectious agent.

身体对外物感染的识别是通过检测感染性外物的分子来实现的。

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When injected into humans, the agent itself or its protein subunits, will elicit a strong immune response, which will be protective against further infection from that agent.

当注入人体时，介质本身或其蛋白质亚基会引发很强的免疫反应从而避免对同种介质的进一步感染。

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The most deadly forms of Hib infection include pneumonia and meningitis, but those diseases can have other causes, and can look the same whether caused by Hib or some other agent.

Hib感染的最致命形式包括肺炎和脑膜炎，但这两种病可有其它病因，而且无论是由Hib或某种其它原因引起的，都可有同样的表现。

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His tiny Rochester Medical Corp. of Stewartville, Minn. had created a device that, much like a medicated stent, delivered a 30-day infection-fighting antibacterial agent.

FORBES: Magazine Article

His tiny Rochester Medical Corp (nasdaq: ROCM - news - people ). of Stewartville, Minn. had created a device that, much like a medicated stent, delivered a 30-day infection-fighting antibacterial agent.

FORBES: Battle Scarred

The only way to eliminate any risk of cross-infection in the aircraft cabin -- or the rapid worldwide spread of an infectious agent -- is to prevent would-be passengers who are either substantially exposed to or carrying transmissible infections from flying.

CNN: Commentary: Flu and your health on a plane