Compiled by the ENCLAI research team following a documented methodology · Editorial oversight: Dr Natalya Mathur, Founder · Data last updated: (UTC)

Measles in Thailand: 2026 cases and outbreak reports

Reported measles surveillance for Thailand (THA) — — latest record 2026-10-18

What the 2026 data shows

No measles case count has been reported for Thailand so far in 2026. No 2025 figure has been reported.

ENCLAI has logged 138 surveillance records for measles in Thailand in 2026, with the most detailed reporting in Oct 2026 (131 records). 1 of those arrived in the last 30 days; the case counts run to 2026-10-18. 2 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: Thailand DDC Division of Epidemiology — DDS disease situation reports

Key facts: Measles

Transmission
Airborne
Droplets and aerosols; contagious in air or on surfaces for up to 2 h. Infectious from 4 days before to 4 days after the rash.Plotkin's 8e · WHO 2026
Incubation
12.5 days (median)
95% CI 11.8–13.2; symptoms usually 7–14 days after exposure (range 7–18).Plotkin's 8e · WHO 2026 · Oxford Hb 2025
Vaccine
MCV, 2 doses · ≈95%
Live attenuated; dose 1 at 9 months where measles is common (12–15 months elsewhere), dose 2 at 15–18 months. Two-dose effectiveness ≈95% (95% CI 89–100).WHO 2026 · Plotkin's 8e

Cited reference facts about the disease, not derived from the surveillance counts on this page. Full set on the Measles page.

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Surveillance summary

2026 cases (YTD)
not reported
2025 cases (full year)
not reported
Baseline avg (3yr)
N/A
Trend (2025)
—
No 2025 figure

Reported cases by year, Thailand

YearReported casesShare of worldwide reports
2023 414 1.2%
2024 7,884 9.0%
2025 not reported —
2026 (year to date) not reported —

Reporting bounds and case definitions vary; historical baselines are a separate comparison measure. Worldwide share compares this country's reported figure with the sum of all countries reporting measles to ENCLAI for that year. "Incomplete year" means our sources cover less than ten months of that year, so no full-year figure is shown; "outbreak total to date" is a running total since an outbreak began, not a count for one year.

Surveillance records logged in 2026

MonthRecordsReporting sources
Aug 202661
Sep 202611
Oct 20261311

A record is one dated surveillance publication or one row of an official table; a month with many records is a month with detailed reporting, not necessarily more cases. 1 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within Thailand with the most measles records this year:

AreaRecords
Ang Thong2
Bangkok2
Buriram2
Chachoengsao2
Chaiyaphum2

Measles in other countries, 2026

Country2026 casesTrend
Guatemala 34,400
Mexico 13,148
Cameroon 9,660 (outbreak total to date)
Nigeria 7,713 ▼ Declining · 2025
South Africa 3,462 (outbreak total to date)

Questions about this page

How many measles cases has Thailand reported in 2026?
No measles case count has been reported for Thailand so far in 2026. No 2025 figure has been reported.
Where does Thailand publish measles surveillance data?
The counts on this page were published by Thailand DDC Division of Epidemiology — DDS disease situation reports. ENCLAI compiles and normalises them and is not affiliated with these authorities.

About this data

Figures are reported case counts as published by the originating health authorities, compiled by ENCLAI from 444 verified surveillance sources. Thailand figures reflect the reporting available to ENCLAI; reporting periods and case definitions differ between sources, and a missing report does not establish zero cases. ENCLAI holds measles records for Thailand dated from 2022. How we verify and update data: methodology & Trust Center · understanding case counts.

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The daily disease brief

One email a day: what changed in official disease reporting worldwide, with the source named for every number. Reported facts only — no forecasts and no interpretation.

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