PORT-AU-PRINCE, Haiti – The United Nations peacekeeping mission in Haiti says it has seen a "slight rise" in the number of cholera cases following the recent passage of Tropical Storm Isaac.

The U.N. Office for the Coordination of Humanitarian Affairs said in a bulletin Saturday that an average of 180 new cases of cholera a day were reported between August 24 and 29, during the period the storm struck. There was an average of 78 new cases a day reported in the full week before the storm.

The increase followed a decline in the average number of daily cholera infections, from 241 in late July to 115 in August, according to the Haitian health ministry.