Figure 1. Geographical distribution and frequency of equids in the municipalities of three Gulf States of Mexico (Tamaulipas, Veracruz, Tabasco) with positive serology by ELISA, PRNT, and/or HI for Venezuelan equine encephalitis virus (VEEV), 2003–2004.
Map inset shows the locations of the States of Tamaulipas, Veracruz, and Tabasco relative to the other states in Mexico. Table inset provides a location key for each municipality. Key inset shows the relative frequency (%) of positive samples based on color intensity.
