So we want to do the same thing, only with infectious agents.

But there was still the question of where these infectious agents had come from.

These were now changed to cover a wide range of infectious agents.

There was only one way she could continue working with dangerous infectious agents.

Similarly, her body can continue to fight off infectious agents.

One thing few doctors considered was the possibility of new infectious agents.

It seems that a protein alone is the infectious agent.

Children may be exposed to different infectious agents than adults.

When it appears depends in part on the specific infectious agent.

Other characteristics of the disease, however, seemed to argue against an infectious agent.

There are, however, many other infectious agents that can cause this syndrome.

Not long ago, most doctors believed that they had identified nearly all infectious agents.

What truly worries me is that infectious agents are involved.

Laboratory work continued in Building 470 until 1970, but no infectious agents were again produced there.

We may never know the exact time of exposure to the infectious agent.

The type of processing can determine if the infectious agent would be passed on.

The infectious agent seems too small and hardy to be a virus.

Children who attend day care and their families are more likely to be exposed to certain infectious agents.

Infectious agents need the right kind of conditions to start epidemics.

Given sufficient effort, all known infectious agents can be specifically identified.

On the other hand, some infectious agents are highly virulent.

Because so many infectious agents can cause pneumonia, the list of possibilities is long.

But no known radiation, or infectious agent, can cause these effects."

Acting as a physical and chemical barrier to infectious agents.

So far scientists at five laboratories have failed to identify any known infectious agent as its cause.