In Haiti there are riots against the UN, for fear that the aid mission brought cholera to the country:
…clashes between rioters and troops left two dead, dozens injured, foreigners in hiding and an awful question hanging in the tear-gassed air: did the UN mission, known as Minustah, bring cholera to Haiti?
The boys and men hurling rocks and bottles and shooting at foreign soldiers in the northern towns of Cap-Haitien and Hinche had no doubt. Nor did the residents of Port-au-Prince, who greeted UN convoys with sullen stares and insults.
The circumstantial evidence, which is not considered to be definitive, is this:
There had been no cholera here in living memory. The strain appears to be from south Asia. Soldiers from Nepal, which has cholera, moved into a base beside the Artibonite river in early October. The base has sanitation problems. A week later the river was contaminated and people in the area started vomiting and getting diarrhoea.