If you plan on traveling to a location where health issues come into play, or you need to find out information about travel health issues the U.S. Govt. Centers for Disease Control (CDC) is a great place to start.

This is the International Society of Travel Medicine web site.  Here you can find additional health information.

If you become ill while traveling overseas, what would you do?  Where would you go?  How would you get back the U.S if the country you were in did not have physicians versed in the technology needed to provide critical care and treatment for you.  This site give you basis information on what you need to know and where to turn.

When you are pregnant you must take special precautions to protect both yourself and your unborn child from illness when traveling to underdeveloped countries. This is an interesting article that provides a starting point for information