It is safer to swim in water that is well chlorinated. If you are travelling to Africa, South America or some parts of the Caribbean, avoid swimming in fresh water lakes and streams. You can catch a parasitic disease called schistosomiasis from such places. This disease is also known as Bilharzia. It is also wise never to go barefoot, but to wear protective footwear when out, even on the beach. Other diseases can be caught from sand and soil, particularly wet soil.
