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

Diphtheria in Norway: 2026 cases and outbreak reports

Reported diphtheria surveillance for Norway (NOR) — — latest record 2026-08-01

What the 2026 data shows

As of 1 August 2026, Norway has reported 2 diphtheria cases in 2026, compiled from figures published by FHI MSIS Notifiable Disease Statistics (Regional) and 1 other reporting authority. No 2025 figure has been reported.

Of the 13 countries reporting diphtheria to ENCLAI in 2026, Norway accounts for 0.0% of reported cases and ranks 12 by case count.

ENCLAI has logged 5 surveillance records for diphtheria in Norway in 2026, with the most detailed reporting in Mar 2026 (1 records); the case counts run to 2026-08-01. 2 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: FHI MSIS Notifiable Disease Statistics (Regional) · ECDC Surveillance Atlas of Infectious Diseases

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Surveillance summary

2026 cases (YTD)
2
2025 cases (full year)
not reported
Baseline avg (3yr)
N/A
Trend (2025)
—
No 2025 figure

Reported cases by year, Norway

YearReported casesShare of worldwide reports
2023 not reported —
2024 not reported —
2025 not reported —
2026 (year to date) 2 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 diphtheria 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
Mar 202611
Apr 202611
May 202611
Jul 202611
Aug 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 diphtheria records this year:

AreaRecords
Møre og Romsdal1
Trøndelag1

Diphtheria in other countries, 2026

Country2026 casesTrend
Nigeria 12,491
Australia 630 ▼ Declining · 2025
Niger 313
Senegal 161 (outbreak total to date)
Guinea 148

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 diphtheria cases has Norway reported in 2026?
As of 1 August 2026, Norway has reported 2 diphtheria cases in 2026, compiled from figures published by FHI MSIS Notifiable Disease Statistics (Regional) and 1 other reporting authority. No 2025 figure has been reported.
Where does Norway publish diphtheria surveillance data?
The counts on this page were published by FHI MSIS Notifiable Disease Statistics (Regional) and ECDC Surveillance Atlas of Infectious Diseases. 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 diphtheria 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.