There is no exact prevention from getting into an accident abroad since you can never predict what may happen. If you do not want such things to happen during your travels, you should prepare in advance if you have any plans on travelling, especially if your destination is to another country. The most recommended kind of people that should have their health overseen constantly are the elderly, people that have pre-existing health problems, pregnant women and to those that are planning to live in a foreign country for a very long time. There are no problems when you are travelling into an industrialized country since it is for sure you will be taken cared of properly but when it comes to developing countries, especially at places that is almost devoid of civilization, it is best that you prepare yourself against these or at best avoid being in such a place for long periods of time, unless you have a medical staff equipped to go with you wherever you go.
In some cases, you can find medical help when you approach your embassy at the country where you are at. Once you call them, they will help you locate the nearest medical services that will be able to help your situation. When you choose your doctor, make sure that he or she is able to communicate with you properly. It can be quite a challenge if you choose a doctor who cannot understand what you are saying.
Most travelers have their own insurance that will cover them in the event of an accident. This can be done before you travel to another country. There are insurances that extend coverage especially when you get into an accident. Aircraft carriers also give travelers their own insurance although this is only applicable when travelers are inside the plane. Even if it is less likely that you are going to get into an accident, at least bring a first aid kit with you and carry with you medicines that relieves pain, allergies, fever or other common illnesses. If you have a maintenance, pack extra in case of delays. You should also carry with you a card that identifies who you are written in the local language. This should include your blood type, history of any chronic illnesses that you had before, a list of medicines that you have taken and currently taking and the kind of allergies that you develop.