Until fairly recently, almost no one was interested in vaccines.

Doctors say it is getting too difficult to tie up so much of their capital in vaccines.

The $118 million deal comes at a time of renewed interest in vaccines.

Problems like these take more than, say, flying in vaccines.

Army researchers have a longstanding interest in vaccines because of their military applications.

That anyone could defend mercury in vaccines, she said, "makes my blood boil."

This is important in vaccines, which have short shelf life and special handling requirements.

The hope was to use them in testing drugs and vaccines, for example, or understanding the likelihood of getting diseases.

They are used in vaccines to help produce strong antibody responses.

However, since 2001, thimerosal has not been present in routine vaccines for children younger than 6.