It is not known why the cholera epidemic, which affected all other continents, has not affected Latin America in the past 30 years. In addition, it is unclear why cholera appeared in Peru in 1991. Improvements in scientific knowledge and technology have occurred in Peru during the last 30 months. While it is impossible to summarize in only one article all these concepts, this article presents a few of the most important issues and recent developments in the treatment and prevention of cholera.