Increasingly a problem in areas of poor sanitation in South America, Middle East, Africa and Asia. Vaccine only recommended if travelling to cholera areas across remote borders, especially overland.
Tropical areas of Africa and South America.
Travellers to Africa are at risk. In Asia and South America, little risk of exposure in towns or resorts or if travelling to rural areas in daylight hours.
Travellers to industrialized countries at little risk. Warm countries with primitive sanitation greatest risk, especially developing countries in Latin America, Asia and Africa.