The World Health Organization - with traveller's health information such as warnings, required vaccinations, etc.
http://www.who.int/en/

Consular Affairs - information and assistance for Canadians abroad
http://www.voyage.gc.ca/consular_home-en.asp

US bureau of consular affairs - information for US travellers and those travelling to the US
http://travel.state.gov/


Also, just a question ... how many of you travel to other countries with additional health coverage to cover your expenses in case of a health related emergency?

I've gotten it every time I've left Canada ... but next time I really should read the policies more carefully because if something did happen, I'm not sure I would know what to do. In Australia, I did have an accident and early on in my recovery process I toyed with the idea of seeing a Dr. but I wasn't sure of the procedures so I didn't. When I went to the US earlier this month, I actually forgot my policy papers at home ... oops! So if something happened, and it almost did, I wouldn't have had the foggiest clue what to do! Definitely something I should be more careful about in the future.