The 10th annual Latin American symposium presented by the American Mosquito Control Association (AMCA) was held as part of the 66th Annual Meeting in Atlantic City, NJ, in March 2000. The principal objective, as for the previous 9 symposia, was to promote participation in the AMCA by vector control specialists, public health workers, and academicians from Latin America. This publication includes summaries of 57 presentations that were given orally in Spanish or presented as posters by participants from 9 countries in Latin America. Topics addressed in the symposium included results from chemical and biological control programs and studies; studies of insecticide resistance; and molecular, ecological, and behavioral studies of vectors of dengue (Aedes aegypti). malaria (Anopheles albimanus and Anopheles aquasalis). leishmaniasis (Lutzomyia), and Chagas' disease (Triatoma). Related topics included biology and control of scorpions and Chironomus plumosus.