The Sri Lanka Army, Navy, and Air Force launched a large-scale dengue prevention program in the Western Province on July 4, 2026. Under the direction of the President and supervision of Defence Secretary Air Vice Marshal Sampath Thuyacontha (Retd), the Tri-Forces are deploying personnel to eliminate mosquito breeding sites and clear drainage systems in high-risk areas to curb the spread of the disease.
Why is the military leading dengue prevention in the Western Province?
The Ministry of Defence is utilizing the Tri-Forces to provide the scale of manpower necessary for rapid, province-wide sanitation. According to the Ministry of Defence Media Centre, personnel are working alongside health authorities, local government institutions, and community-based organizations to identify and destroy breeding sites.

This coordinated approach targets “high-risk areas” where urban density often leads to blocked drainage and stagnant water. By integrating military logistics with local health expertise, the government aims to create a faster response mechanism than traditional municipal cleaning alone.
What specific actions are the Tri-Forces taking?
The operation focuses on four primary pillars of intervention. According to official reports from the Ministry of Defence, personnel are currently:
- Executing extensive cleaning campaigns across institutions and surrounding localities.
- Identifying and eliminating potential mosquito breeding sites.
- Clearing blocked drainage systems to prevent water stagnation.
- Conducting community awareness programs to teach residents about prevention measures.
These actions reflect a shift toward “community welfare initiatives” where the military’s role expands from national security to public health support during outbreaks.
How does this impact long-term public health strategy?
Using the Tri-Forces allows for a “national mechanism” approach to disease control. This model ensures that high-risk zones receive immediate attention without waiting for localized municipal budgets or staffing. The focus on the Western Province is strategic, as this region often sees the highest population density and corresponding infection rates.

For a deeper look at how urban planning affects health, see our guide on Urban Health Infrastructure or visit the World Health Organization (WHO) for global dengue prevention standards.
Frequently Asked Questions
Who is supervising the dengue prevention program?
The program is under the direct supervision of Defence Secretary Air Vice Marshal Sampath Thuyacontha (Retd), following instructions from the President.
Which regions are being targeted?
The current focus is on high-risk areas throughout the Western Province.
Who is involved in the cleanup?
Personnel from the Sri Lanka Army, Sri Lanka Navy, and Sri Lanka Air Force are working in coordination with local government and health authorities.
How can you help keep your neighborhood safe? Share your tips for eliminating breeding sites in the comments below or subscribe to our newsletter for more updates on national health initiatives.
