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Travel
and Migration
Almost any place on earth can be reached
within 36 hours, less than the incubation period for most
infectious diseases.
Each year more than 500 million people cross
international borders by aircraft alone and diseases are exported
and imported like any commodity. As a result, diseases such
as Dengue Fever and West Nile Virus, once considered foreign
are now on our soil. Familiar diseases, such as cholera, malaria,
tuberculosis and yellow fever, once under control, are again
on the increase, spreading to previously unaffected regions,
including the United States.
The more disease spreads unchecked in resource
poor regions of the world, the higher the risk to travelers.
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