The 1991-96 cholera epidemic in Mexico originated in Peru in January 1991. It quickly spread northwards, reaching Central America by March and Mexico by July (see map). The cholera epidemic then spread slowly across Mexico before abating.
The incidence of cholera was much higher in the Gulf coast states than either inland or along the Pacific coast. By the time the epidemic was over in 1996, more than 43,500 cases had been reported in Mexico and 524 people had died.