Not that it's perfect information, but the FDA has cleared tomatoes from several states within Mexico as NOT being related to the salmonela outbreak. These include the following:
Aguascalientes, Baja California Norte, Baja California Sur (Cabo), Campeche, Colima, Chiapas, Chihuahua, Distrito Federal, Durango, Guanajuato, Guerrero (Acapulco), Hidalgo, México, Michoacán, Morelos, Nayarit (Puerto Vallarta), Nuevo León, Oaxaca, Puebla, Querétaro, Quintana Roo (Cancun and Riviera Maya) , San Luis PotosÃ, Sonora, Tobasco, Tamaulipas, Tlaxcala, Veracruz, Yucatán, Zacatecas