The district reported 47 cases of dengue fever on Tuesday from across the district.
Health officials said cases were beginning to be reported in good numbers from the Corporation wards now, with sustained disease-control activities now taken up in the outskirts of the city. Though the number of cases seemed to go up, there was no clustering of dengue cases.
Dengue fever has been reported mostly from the southern region of the district, including from Sreekaryam, Ambalathinkara, Karikkakom, Shaghumughom, Pappanamcode, Pattom, Peroorkada, Balaramapuram, and beyond.
Leptospirosis has also been showing an upward trend with the intensifying of the rain and seven cases were reported on Tuesday.
Health officials said caution had been sounded about people going barefoot in muddy waters and that workers under the Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGS) should be given prophylactic treatment with 200 mg of Doxycycline on the first day of every week to prevent leptospirosis.
Health officers had been asked to do weekly surveillance of water quality.