I just learned awhile ago that world travelers are expected to avail themselves of an international travel insurance. This is needed in case of emergency such sickness or injury wherein the policy holder needed to be hospitalized in a different country. This will make the insurance company help the insured settle bills even if he or she is outside the country. Aside from that it also takes care of travel delay, baggage loss, or worse scenarios. Anyway, there are many types of international travel insurance. Some comes in covering health issues while others come in packages.
So, if you are a world traveler, I suggest you get one for your own good