Bioterrorism: a challenge to public health and medicine.

Only a few years ago, an attack with a biological agent would have been considered almost unthinkable. Today, however, the threat of bioterrorism is real and growing. This article will provide a brief overview of the threat of bioterrorism, the special role of public health and medicine, and some of the critical issues that need to be addressed as this nation prepares for this disturbing and potentially catastrophic threat.