Update on bioterrorism preparedness.

Knowledge and preparation are the best defense against a biological attack. By understanding the epidemiology of biological warfare agents and diseases, strategies can be planned to decrease the morbidity and mortality associated with them. There is an urgent need for developing rapid diagnostic tests, effective vaccines, and drug therapy to defend against biological weapon attacks. The CDC, along with other agencies and partners, are defining how the public health system is to prepare for and respond to public health threats posed by terrorism.