The American Journal of Tropical Medicine and Hygiene publishes both unsolicited peer-reviewed papers and invited review articles. Also included are case studies, reports on the efficacy of new drugs and methods of treatment, prevention and control methodologies, new testing methods and equipment, and important new research. Topics range from applied epidemiology in such relevant areas as AIDS to the molecular biology of vaccine development. This is the journal of the American Society of Tropical Medicine and Hygiene.