Results of the vaccine were not as good in the other 25 patients.

A single shot of the vaccine is about $33, he said.

An answer to that question could help in the development of a vaccine.

But the effects may be very similar to those of a vaccine.

That's just one of several vaccines you may need now.

"We are looking at the question of vaccines and so on."

An industry executive said it was not yet known what type of vaccine the government wanted.

The table below shows the types of vaccines given in example countries.

Will we ever agree on the risk and benefits of vaccines?

Experts say that's just one of several vaccines you may need now.