OBJECTIVE
To evaluate the influence of individual spatial units (ie, counties) on the epidemic spread of foot-and-mouth disease (FMD) virus.
SAMPLE POPULATION
163 counties in Uruguay where there was an outbreak of FMD between April 23 and July 11, 2001.
PROCEDURE
A geographically referenced database was created, and the distance between counties (13,203 county pairs), road density of counti...