Open Source Everywhere
Cholera is one of those 19th-century ills that, like consumption or gout, at first seems almost quaint, a malady from an age when people suffered from maladies. But in the developing world, the disease is still widespread and can be gruesomely lethal. When cholera strikes an unprepared community, people get violently sick immediately. On day two, severe dehydration sets in. By day seven, half of a village might be dead.