Is anything worse than usual in Gampaha right now?

Yes. Dengue is far above usual: 6.3× its usual for these weeks.

Far above usual · 6.3×

882 dengue cases a week, against a usual 139.

01k2k2026JanAprJulOctWeek 14 of 2026: 10, as printedWeek 24 of 2026: 24, as printed

Usual range: the two years before

Week 14: the Ministry of Health's two reports disagree (10 here, from its Epidemiology Unit; 188 in its National Dengue Control Unit's weekly update). Shown as printed.

Week 24: the Ministry of Health's two reports disagree (24 here, from its Epidemiology Unit; 1,039 in its National Dengue Control Unit's weekly update). Shown as printed.

Read from these four weekly reports by Epidemiology Unit, Ministry of Health, Sri Lanka:

  • 20–26 Jul 2026 (Vol 53 No 31)
  • 26 Jul–2 Aug 2026 (Vol 53 No 32)
  • 3–9 Aug 2026 (Vol 53 No 33)
  • 10–16 Aug 2026 (Vol 53 No 34)
The 8 reports behind "usual"
  • 20–26 Jul 2024 (Vol 51 No 31)
  • 27 Jul–2 Aug 2024 (Vol 51 No 32)
  • 3–9 Aug 2024 (Vol 51 No 33)
  • 10–16 Aug 2024 (Vol 51 No 34)
  • 19–25 Jul 2025 (Vol 52 No 31)
  • 26 Jul–1 Aug 2025 (Vol 52 No 32)
  • 2–8 Aug 2025 (Vol 52 No 33)
  • 9–15 Aug 2025 (Vol 52 No 34)

The publisher's own list of its weekly reports

⅛×usual8×

How this is worked out. The last four weeks against the same four weeks of the two years before, for this district alone. Illnesses with fewer than 5 cases a week here are left out: too few to compare.

Where is dengue worst in Gampaha right now?

218 cases in the week to 13 September, 2.3 times the same week last year.

These 12 local health areas were flagged as high-risk that week, most cases first.

  • Pugoda(Dompe)38up from 37 the week before
  • Biyagama26down from 29 the week before
  • Mahara19up from 18 the week before
  • Ja-Ela16up from 15 the week before
  • Ragama16up from 6 the week before
  • Meerigama14up from 10 the week before
  • Aththanagalla12down from 23 the week before
  • Minuwangoda12down from 18 the week before
  • Kelaniya11the same as the week before
  • Divulapitiya10down from 13 the week before
  • Negombo10up from 5 the week before
  • Wattala10up from 7 the week before
224cases the week before
20,741so far this year, against 5,614 by now last year

Source: National Dengue Control Unit, Ministry of Health, Sri Lanka, Weekly Dengue Update, week 37 of 2026. It counts suspected cases and comes out weeks sooner than the weekly report used elsewhere on this page, so its figures are newer and usually a little higher.

What makes the most people ill here?

Dengue: 88 of every 100 reports here this year.

  • Dengue88 in 100
  • Tuberculosis4 in 100
  • Chickenpox4 in 100
  • Leptospirosis2 in 100
  • Meningitis1 in 100
  • 7 others1 in 100

16,537 reports from Gampaha so far in 2026.

Which illnesses are coming into season here?

Chickenpox and leptospirosis usually peak here in the next three months.

Usual peak, from 2014 to 2025Next ten weeks

How does Gampaha compare with the rest of Sri Lanka?

Gampaha is 7th of the 21 districts with enough dengue to compare, each against its own usual.

usual⅛×8×32×country 4.7×Anuradhapura: 6.0×Badulla: 7.6×Batticaloa: 3.0×Colombo: 4.0×Galle: 5.3×Gampaha: 6.3×Hambantota: 6.7×Jaffna: 2.5×Kalmunai: 6.5×Kalutara: 7.8×Kandy: 3.5×Kegalle: 5.3×Kurunegala: 3.8×Matale: 2.8×Matara: 7.2×Monaragala: 3.8×Nuwara Eliya: 6.3×Polonnaruwa: 5.0×Puttalam: 7.0×Ratnapura: 2.6×Trincomalee: 2.1×Gampaha

Across Sri Lanka as a whole, dengue is at 4.7× its usual; here it is 6.3×.

Why each district against itself. A large district always has more cases than a small one. Each dot is a district against its own usual, so size drops out.

Where can people get care in Gampaha?

68 government hospitals and clinics, from 46 primary care units to 1 national and teaching hospitals.

  • 46Primary care unitsthe first stop for most illnesses
  • 11Divisional hospitalssmall local hospitals
  • 6District and base hospitalslarger hospitals with specialists
  • 1National and teaching hospitalsthe largest, for serious and specialist care
  • 4Other specialised hospitalseye, mental health, infectious diseases and others

Where volunteers on OpenStreetMap have mapped hospitals and clinics. Their map shows where they have been, not everything that exists.

HospitalClinic or doctor

Hospitals named on the map include:

  • Gampaha Wickramarachchi Ayurveda Teaching Hospital
  • North Colombo Teaching Hospital
  • Gamapaha General Hospital
  • Negombo General Hospital
  • Kandana Base Hospital
  • Kiribathgoda Base Hospital

Source: Directorate of Planning, Ministry of Health and Mass Media, Sri Lanka, List of Hospitals and Hospital Bed Data, 2026; map: OpenStreetMap contributors, via the Humanitarian OpenStreetMap Team, licence ODbL 1.0.

How far is care from here?

5% of people live more than an hour's walk from a hospital or clinic.

Walking time to the nearest hospital or clinic, for everyone living in Gampaha. Half of people are within 22 minutes.

  • Within an hour's walk95%
  • One to two hours5%
  • More than two hours0%

And to a larger hospital?

5 kmhalf of people live closer than this to a base, general or teaching hospital
9%live more than 10 km away, in a straight line; roads are longer

Sources: walking times, Weiss and others, Nature Medicine 2020 (Malaria Atlas Project), a model at walking pace from facilities mapped in 2019; where people live, WorldPop 2020; larger hospitals, the Ministry of Health's list of its hospitals (2026), with locations from OpenStreetMap contributors.

Can we trust this week's numbers for Gampaha?

Yes, for this week. Gampaha sent figures in 52 of the last 52 weekly reports.

Weekly reports with figures from Gampaha, most recent last

A reported case means someone reached a clinic and a form was filed, so these count reports, not everyone who was ill.

Sources. Epidemiology Unit, Ministry of Health, Sri Lanka, weekly report. District maps: Survey Department of Sri Lanka, published as a Common Operational Dataset by the UN Office for the Coordination of Humanitarian Affairs.