Concern is growing with the first case of cholera having been detected in the Dominican Republic across the border from neighbouring Haiti.
According to reports, the patient is a Haitian migrant who had recently returned from his homeland.
Strict controls are being introduced to prevent the spread of the epidemic.
More than 1000 Haitians have so far died of the disease and medical staff are treating nearly 17,000 in overstretched hospitals.
Hostility against the peacekeeping mission has focused on the Nepalese contingent, whose base has been blamed for being the source of the cholera outbreak.