Directory Listings:

Travelers' Health
US Centers for Disease Control presents disease outbreak alerts, reference material, destination updates, cruise ship inspection scores, recommended vaccinations, and information for family and special needs travel.

Travel Health Online
Health information categorized by type of illness, and by destination. Also a list of travel medicine providers.

MD Travel Health 
Health risks and services in many countries, infectious diseases and suggested immunizations, illness prevention, and special needs travelers.

Passport Health 
USA-based company offering travel health advice and consultations.

Travel Health Help
Explains how to avoid diseases using mosquito nets and discusses travel health issues like malaria and the West Nile virus.