The outbreak of cholera in Haiti is the thin edge of the wedge re overpopulation. They are grossly overpopulated so cholera would have broken out eventually.
Every country must introduce birth control. China, India, South East Asia, Bangladesh, Africa are bursting at the seams.
In spite of medical wonders, people still die, as they become immune to the modern drugs. Now superbugs are appearing which seem to be uncontrollable, and of grave concern, just as some houseflies become immune to some insecticide's sprays.
We humans seem to have lost control over most inventions, for example atomic weapons, pollution of the atmosphere, ocean, land, and our own population.
EM Izett, Tauranga.