Travel is the transfer of individuals between different remote geographical locations. Travel can often be performed by foot, by car, bike, plane, train, bus, boat or other transport means, with either luggage or no luggage, and could be one-way or round trip, usually from destination to destination. Many forms of transportation are available, from airways to trains and from bridges to canals. The Internet and television now allow for a quick and easy travel. Some travel can be conducted by car, motorcycle, scooter, motorized wheelchairs, and in some cases, people with medical needs can use special equipment to assist them on their travels.
Invented by the Russian Revolution, the word “tourism” was introduced to describe any form of travel to other countries. Today, tourism is organized by state bodies and supported by numerous foreign policies. A number of countries have tourist organizations that coordinate the travel of visitors to their various destinations. The tourism industry is extremely profitable. Many tourists fly to a country to spend their vacations, but some travel for business as well.
The concept of travel induced illnesses dates back to Roman times. This view was that diseases were brought about by travel and that travelers spread these illnesses by traveling from one place to another. Hence, the need for vaccines and inoculations grew out of this concern. In recent years, there has been a trend for travelers to get vaccinated before going on vacation. In most developed countries, travelers will receive a flu shot or have their routine vaccines before arriving at the airport or bus terminal. Some developing countries also have a similar requirement.