The following are links to authoritative sources of information on a range of travel health and safety resources.
Immunization Information
Center for Disease Control – Find health information on specific destinations.
World Health Organization – Obtain information concerning immunizations and endemic regions.
Pan American Health Organization – An excellent source for the Americas.
Medical Information
Go Ask Alice – Good general information, especially for those hard to ask questions.
Security / Travel Advisories
US State Department Consular Reports
Canadian Department of Foreign Affairs
UK Foreign & Commonwealth Office – Travel Advice Unit
Assistance
International SOS – Travel assistance, health clinics and evacuation services.
MedAire – Aviation Assistance Services Worldwide.
On Call International – Travel assistance and evacuation services.
Global Rescue – Travel assistance and evacuation services.
HX Global – Travel assistance and evacuation services.