Barricading U.S. Borders Against a Devastating Disease

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Science  23 Mar 2001:
Vol. 291, Issue 5512, pp. 2298-2300
DOI: 10.1126/science.291.5512.2298

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DULLES AIRPORT, VIRGINIA-- U.S. officials are stepping up efforts to keep out foot-and-mouth disease, which infects all cloven-hoofed animals and is one of the most contagious diseases on Earth. But given the global economics of modern farming, in which the direct and indirect costs of vaccines often make it cheaper to stamp out disease outbreaks than to prevent them, some experts believe it is only a matter of time until the virus reaches the United States.