[Business travel and staying abroad].

The growing internationalization of business and the economy is leading more and more working people to spend short or even long stays abroad. With fast journeys across several time zones, travellers are mainly confronted with problems of time difference adjustment, commonly known as "jet lag". For longer stays, especially when the family comes along too, a number of additional difficulties may arise which are not normally faced by tourists. People's physical ability to tolerate a long stay in the tropics is rarely questioned nowadays, except in cases of serious physical illness. However, the effects of such stays on an individual's psychological condition are receiving increasing attention. Inoculations and advice are largely determined by the epidemiology of infectious diseases and the medical infrastructure of the country of destination. Death caused by illness can almost always be avoided through the appropriate prophylaxis and/or therapy. Unfortunately, the same does not apply to accidents. The local medical infrastructure in the larger cities of the developing countries and the range of flights available for sick and injured people are continually improving with a few exceptions.