Figure 1. Chiapas (CHP) and surrounding states in southern Mexico. The star indicates where the rodents in this study were captured; the solid circle indicates the location of the hospital that provided care for the persons affected by hemorrhagic fever in the 1967 epidemic (17). Inset shows the location of CHP in Mexico. CAM, Campeche; OAX, Oaxaca; TAB, Tabasco; VER, Veracruz.