BHUBANESWAR: Cholera may have been controlled in Kalahandi but it is still fully on with its dreaded hybrid variant threatening to break loose. A surveillance study suggests that this killer bacteria is present in at least 13 districts of the State. While Rayagada witnessed the scourge of cholera in 2007, Kalahandi recorded over two dozen fatalities last month. An ongoing study by Regional Medical Research Centre (RMRC) says it is endemic in Puri with the disease present round the year. While RMRC has been carrying out surveillance on diarrhoea in Puri for the last 10 years, its study outcome says that the cholera bacteria has been found in most parts of the district.