Sri Lanka has recorded 94,037 dengue cases so far in 2026, health authorities say, with July the worst month of the outbreak to date.
July alone accounted for 29,962 cases, following 21,533 in June. A further 8,701 have been reported in the first weeks of August. The first five months of the year were comparatively contained: 7,866 cases in January, 5,721 in February, 6,013 in March, 5,651 in April and 8,590 in May.
Those monthly figures account for the full national total, placing the mid-year surge — roughly 55% of all 2026 cases in June and July combined — at the centre of the outbreak.
Western Province carries more than half
The Western Province has reported 49,771 cases, or 52.93% of the national total. The Southern Province follows with 13,763 and the Central Province with 8,519.
At district level Gampaha leads with 20,034 cases, ahead of Colombo with 18,652, of which 3,787 fall within the Colombo Municipal Council area. Kandy has recorded 6,818 cases, Kalutara 6,093, Galle 6,079, Ratnapura 5,160, Matara 5,003, Kegalle 2,713, Kurunegala 2,651 and Hambantota 2,510.
The three Western Province districts as published do not fully reconcile with the province-wide figure, a gap Ada Derana did not explain.
76 high-risk areas
Health authorities have identified 76 Medical Officer of Health areas nationwide as high-risk for dengue, and have urged the public to clean and destroy mosquito breeding sites regularly and to seek prompt medical attention from a qualified doctor for any fever.
The caseload has climbed steeply since mid-July, when cases stood at 69,951 — an increase of more than 24,000 in around six weeks. The National Dengue Control Unit records Sri Lanka’s largest outbreak as 2017, when more than 186,000 cases were reported nationally.
No verified Sri Lankan newsroom other than Ada Derana had published its own report of the 94,000 milestone as of Monday afternoon.
