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

Measles in Norway: 2026 cases and outbreak reports

Reported measles surveillance for Norway (NOR) — ▼ Declining · 2025 — latest record 2026-09-01

What the 2026 data shows

As of 1 September 2026, Norway has reported 1 measles cases in 2026, as published by ECDC Monthly Measles & Rubella Surveillance (1 other reporting authority also reports it). The full year 2025 closed at 4 cases. The three-year baseline for Norway is 9 cases a year. 2025 closed 54% below 3yr avg (WHO historical series), which is why the trend reads “Declining”.

Of the 66 countries reporting measles to ENCLAI in 2026, Norway accounts for 0.0% of reported cases and ranks 66 by case count.

ENCLAI has logged 18 surveillance records for measles in Norway in 2026, with the most detailed reporting in Apr 2026 (4 records); the case counts run to 2026-09-01. 4 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: ECDC Surveillance Atlas of Infectious Diseases · ECDC Monthly Measles & Rubella Surveillance

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)
1
2025 cases (full year)
4
Baseline avg (3yr)
9
Trend (2025)
▼ Declining · 2025
-54% vs 3yr avg

Reported cases by year, Norway

YearReported casesShare of worldwide reports
2023 not reported —
2024 not reported —
2025 4 0.0%
2026 (year to date) 1 0.0%

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
Jan 202622
Feb 202622
Mar 202622
Apr 202643
May 202622
Jun 202622
Jul 202622
Aug 202611
Sep 202611

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.

Sub-national reporting, 2026

Areas within Norway with the most measles records this year:

AreaRecords
Rogaland1
Trøndelag1

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)

Other diseases reported in Norway, 2026

Disease2026 casesTrend
Rhinovirus infection 28,069
Seasonal influenza 16,080 ▲ Rising · 2025
Respiratory syncytial virus infection 14,243 ▲ Rising · 2025
COVID-19 5,329 ▼ Declining · 2025
Human metapneumovirus infection 4,256

Questions about this page

How many measles cases has Norway reported in 2026?
As of 1 September 2026, Norway has reported 1 measles cases in 2026, as published by ECDC Monthly Measles & Rubella Surveillance (1 other reporting authority also reports it). The full year 2025 closed at 4 cases. The three-year baseline for Norway is 9 cases a year. 2025 closed 54% below 3yr avg (WHO historical series), which is why the trend reads “Declining”.
Is measles rising or falling in Norway?
ENCLAI's trend reading for measles in Norway is “Declining · 2025”: the latest complete year is compared with the earlier baseline from the reported counts; the current year is not judged until it closes.
Where does Norway publish measles surveillance data?
The counts on this page were published by ECDC Surveillance Atlas of Infectious Diseases and ECDC Monthly Measles & Rubella Surveillance. 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. Norway 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 Norway dated from 2024. 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.

Double opt-in — we send a confirmation link and nothing else until you click it. One-click unsubscribe on every email. See our privacy notice.