The health-development link: travel as a public health issue.

The process of globalization has rendered societies interdependent on one another and has fostered the movement of people, goods and ideas at unprecedented speed and volume. Global travel has grown from 25 million in 1950 to 500 million in 1993, and estimations by 2010 reach 1 billion. The increased intensity and quantity of travel has resulted in greater vulnerability to the domino-type spread of old, new and re-emerging infectious diseases. Travelers and local populations are also vulnerable to death and disability due to accidents, violence and injuries, chronic diseases such as those due to substance abuse (tobacco, alcohol and others), and to undesirable behaviors such as those related to sex-tourism. This article argues that tourism, understood as any type of travel, is one of the most important sectors of the economy in many countries and, therefore, can contribute to community and national development. It also asserts that travel, as a factor in the spread of disease, lies in the realm of public health inquiry. It calls for greater collaboration between the tourism-travel industry and community, national and global leaders to promote and enforce "responsible tourism."