Interactive map showing dengue hotspot localities, TB clusters, and other disease outbreak locations across Malaysia. Markers indicate areas with confirmed active cases or recent outbreaks reported by the Ministry of Health and iDengue surveillance system.
A dengue hotspot is defined as a locality where dengue cases are actively being reported and where Aedes mosquito breeding sites have been identified during vector surveillance. The Malaysian government's iDengue system, operated by the Ministry of Health in collaboration with local authorities, classifies localities based on case density and vector indices — providing the public with early warning to take preventive action.
Hotspot status is determined by epidemiological investigation following confirmed dengue cases in a locality. Health inspectors conduct house-to-house inspections to identify and destroy Aedes breeding sites, and the locality remains classified as a hotspot until no new cases are reported for 14 consecutive days and vector surveillance shows Aedes indices below the threshold level.
Selangor consistently accounts for the highest proportion of Malaysia's dengue cases — typically 40–50% of the national total. The state's dense urbanisation, extensive construction activity, and tropical rainfall create ideal conditions for Aedes albopictus and Aedes aegypti breeding. High-risk areas include residential developments adjacent to construction sites, neighbourhoods with poor waste management, and areas with accumulated standing water in discarded containers.
If your locality appears on this map or is identified as a dengue hotspot by iDengue, take immediate action to eliminate standing water around your home. The complete life cycle from Aedes egg to adult mosquito takes approximately 7–10 days, so weekly inspection and destruction of breeding sites is essential to break the cycle before new mosquitoes emerge.
Focus on flowerpot saucers, roof gutters clogged with leaves, discarded containers, bathroom water storage, uncovered tanks, and any objects that can collect even small amounts of rainwater. A single bottle cap of stagnant water is sufficient for Aedes to lay eggs. For a comprehensive step-by-step prevention plan, read our complete dengue prevention guide.
Dengue warning signs: If you develop sudden high fever (40°C), severe headache, pain behind the eyes, joint and muscle pain, or skin rash — especially while living in or near a hotspot — seek medical attention immediately. Do not take aspirin or ibuprofen. Go to your nearest hospital emergency department or call the KKM hotline at 03-8881 0200. Early detection saves lives.
Elderly individuals, young children, pregnant women, and people with chronic conditions such as diabetes and hypertension are at significantly higher risk of developing severe dengue complications including dengue haemorrhagic fever and dengue shock syndrome. Families with elderly members living in or near hotspot areas should take extra precautions — our guide on protecting seniors during outbreak season covers specific measures for this vulnerable group.
Parents with children attending childcare centres or kindergartens in hotspot localities should confirm with the facility that outdoor play schedules have been adjusted to avoid peak Aedes biting hours (early morning and late afternoon), and that the premises are regularly inspected for breeding sites. Our childcare health and safety checklist covers what to look for.
Tuberculosis clusters shown on this map represent areas where the KKM CPRC has identified linked TB cases through contact tracing investigations. Unlike dengue, TB is an airborne disease spread through prolonged close contact with an infected person — not through mosquitoes or water. TB clusters are typically associated with households, workplaces, or institutional settings (dormitories, correctional facilities) where sustained close contact occurs.
As of early 2026, active TB clusters have been reported in Selangor, Johor, Sabah, Kedah, Kelantan, Pahang, and Perlis. If you develop a persistent cough lasting more than two weeks, unexplained fever, night sweats, or unintentional weight loss, visit your nearest health clinic for TB screening. TB is curable with a standard 6-month treatment regimen under the Directly Observed Therapy (DOT) programme.
The amber HFMD markers show the states carrying the heaviest hand, foot and mouth disease burden — Selangor, Kuala Lumpur, and Johor. Unlike dengue hotspots, these are not single localities but state-level seasonal surveillance areas: HFMD circulates through childcare centres and kindergartens, peaking around March–May and September–November. Parents should review our childcare health and safety checklist.
The teal chikungunya markers are a low-level watch rather than active outbreaks. Malaysia recorded fewer than 100 chikungunya cases in 2025 with no deaths, but the disease spreads through the same Aedes mosquito as dengue, so the vector is already present nationwide. Every step you take against dengue protects you here too — see our chikungunya guide for how the two diseases differ and what to watch for.
Community action: Dengue prevention is most effective when entire neighbourhoods participate. Organise or join gotong-royong (community clean-up) activities to eliminate breeding sites across your area — a single untreated breeding site on a neighbour's property can produce mosquitoes that affect your entire street. Employers can find workplace-specific requirements in our workplace health and safety guide.
Hotspot data on this map is compiled from the iDengue system (idengue.mysa.gov.my) and KKM CPRC situation reports. Locations represent general localities (taman, kampung, section) and do not indicate exact addresses of individual cases. There may be a delay of 24–72 hours between case confirmation and hotspot designation appearing in the iDengue system.
For the latest official dengue hotspot data, visit the iDengue portal directly. For state-level case figures, see our Cases by State tracker. For trend analysis and historical comparisons, visit the Statistics page.