Dengue remains a critical public health challenge in Sri Lanka, with seasonal spikes and varying severity across the years. Our statistical pages help break down this data to highlight significant patterns helping you stay informed about the shifting trends of this tropical health concern.
With the numbers sourced from the National Dengue Control Unit, Ministry of Health, we hope this makes the data more accessible and insightful for researchers, policymakers, public health officials, journalists, and the general public.
Common Dengue Symptoms Include:
- High grade fever
- Severe headache
- Severe pain behind the eyes
- Joint pain
- Muscle pain
- Bone pain
- Nausea
- Vomiting
- Rash
- And sometimes mild bleeding
What you'll find on these pages
Trends Over Time
Visual line charts display fluctuations within each year and across multiple years, showing how the disease behaves across seasons.
Annual Breakdown
Explore the number of dengue cases recorded every month, year-by-year, to understand the seasonality and peaks of outbreaks.
Comparative Trends
Spot year-to-year differences—what months saw improvements and where dengue cases surged. Compare recent years to identify patterns of progress or challenges.
Key Highlights
The year 2022, 82,989 cases recorded, with the highest surge in July (11,437 cases). Dengue cases began to rise sharply from May and reached its peak mid-year before tapering off toward December.
An interesting year with 97,458 cases, showing persistent high numbers across most months. Notably, November saw a significant spike with 11,910 cases, making it the month with the highest cases for the entire year.
While data for the later months are still incomplete, early trends suggest a decrease in case numbers compared to previous years. January recorded 10,417 cases, the highest so far, but subsequent months like April and May show signs of a slowdown.
