Hospital officials said they do not know how many people were exposed.

Out here, people are exposed to a lot of good wine.

And one question for researchers has been exactly how people are exposed to them.

And all those people were exposed to danger, maybe even death.

The numbers of people exposed to it are far larger than we expected.

Sometimes people are exposed to these chemicals where they work.

One reason may be that the disease has reached areas where people have never been exposed to it before.

Tests showed that 28 people in and around the office were exposed.

Most people are exposed to some amount of lead in their lifetime.

"But as people get exposed to more, their demands increase."