AP Photo

The cholera epidemic in Haiti, which began in late 2010, is bad and getting worse, for reasons that are well understood and that the aid community has done far too little to resolve. A chronic lack of access to clean water and sanitation make Haitians vulnerable to spreading sickness, especially as spring rains bring floods, as they always do. Summer hurricanes are bound to come; more misery and death will follow. The Pan American Health Organization has said the disease could strike 200,000 to 250,000 people this year. It has already killed more than 7,000.