Here's brief list of suggestions:
Of course, the 1st step is don’t get sick:
1. Get necessary vaccines before departure. You can check with your PCP, but it’s very likely s/he will not be travel medicine savvy. I typically use the ASTMH/ACCTMTH directory ( http://www.astmh.org/source/ClinicalDirectory/
) or the little known gem Passport Health ( http://www.passporthealthusa.com/locations/
) to find out what’s currently is being recommended for a destination(s).
2. In the developing world, be prudent about drinking water from the tap. Stick to bottled drinks, especially water. Also, avoid unshelled fruits & vegetables. Stick to fruits with hard shells and avoid berries. If you chance it with leafy greens, they should be very well washed.
3. Verify that your health insurance company covers medical expenses abroad (lots don’t). Familiarize yourself with coverage, and especially with the process of reimbursement (even DAN can be a problem if you don’t carefully follow the rules). If your carrier does not cover you oversees, consider traveler’s insurance, such by reading this from Nomadic Matt à http://www.nomadicmatt.com/travel-blogs/travel-insurance/
4. Consider getting an IAMAT (International Association for Medical Assistance to Travelers) membership ( http://www.iamat.org/
). It’s free & maintains a network of approved health professionals throughout the world who offer services to travelers at a fixed rate.
If you do end up sick, head to a designated medical facility per your coverage. You can also call the local embassy or consulate thru 00 1 202-501-4444 or visit Websites of U.S. Embassies, Consulates, and Diplomatic Missions ( http://www.usembassy.gov/