The 1781-1782 Smallpox Epidemic in Baja California
- Author(s): Jackson, Robert H
- et al.
In the years 1781 and 1782, the Indian population of Baja California experienced a virulent smallpox epidemic that originated in central Mexico and then spread to the northern frontier provinces. The disease entered the peninsula by way of a group of infected families from Sonora, members of the Rivera y Moncada expedition enroute to Alta California (Sales 1956:60).