• American Society for Tropical Medicine and Hygiene Purpose includes the prevention and control of tropical diseases through research and education.

• Malaria Foundation Mission is to facilitate the development and implementation of solutions to the health, economic and social problems caused by malaria.

• Royal Society of Tropical Medicine and Hygiene London-based organization promoting the study, control and prevention of tropical diseases.

• Swiss Tropical Institute Mission is contribute to the improvement of the health of populations internationally through research, services and teaching and training. Site available in English, Deutsch, or Fran?ais.

• The Hospital for Tropical Diseases : Travel Health The department of travel medicine provides up to date information on vaccines and how to avoid nasty things like malaria and travelers diarrhea. (London)

• 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.

• Tropical-Medicine.net Information about diseases of the tropics including bacterial, viral and parasitic causes, treatments, and outcomes. Part of the ALtruis Biomedical Network.