Cholera is a disease which can strike, in any community where sanitary conditions deteriorate or where it is possible for a few people to transport the organism from infected areas to new communities. The historical background of the seven major pandemics and the discovery of the causative organism are provided from 1800 to 1995. With, the procedure of oral rehydration therapy few patients should succumb to the disease if clean water is available. The problem is that large-scale floods in many places often lead to a breakdown in clean water supplies and sewerage treatment so it will not pay to be complacent, cholera has not disappeared!