Tentative distribution list for peach mosaic disease
According to Oldfield et al. (1995), peach mosaic disease has been observed in several States in Mexico (Aguascalientes, Baja California, Chihuahua, Coahuila, Guanajuato, Hidalgo, Michoacan, San Luis Potosi, Sonora, Zacatecas) and in USA. There are apparently no records outside North America.
North America: Mexico (Chihuahua and central highlands), USA (Arizona, Arkansas, California, Colorado, New Mexico, Oklahoma, Texas, Utah).
Sources
Oldfield, G.N.; Creamer, R.; Gispert, C.; Osorio, F.; Rodriguez, R.; Perrings, T.M. (1995) Incidence and distribution of peach mosaic and its vector, Eriophyes insidiosus (Acari: Eriophyidae) in Mexico.
Plant Disease, 79(2), 186-189.