Research and Training in Tropical Diseases Program sponsored by the World Health Organization, the United Nations, and the World Bank involved in combating major tropical diseases. http://www.who.int/

Royal Society of Tropical Medicine and Hygiene London-based organization promoting the study, control and prevention of tropical diseases. http://www.rstmh.org/

Swiss Tropical Institute Mission is contribute to the improvement of the health of populations internationally through research, services and teaching and training. http://www.sti.ch/

The Traveling Physician - Arthur Dover MD Travel health consultations, immunizations, malaria prevention, and yellow fever vaccines performed in your Santa Cruz, San Jose or Monterey area home or business. http://www.arthurdovermd.com/

WHO Division of Control of Tropical Diseases Promotes, advocates and coordinates tropical disease control to improve the health status of individual communities and populations. http://www.who.int/