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

Diphtheria in Czechia: 2026 cases and outbreak reports

Reported diphtheria surveillance for Czechia (CZE) — ▲ Rising · 2025 — latest record 2026-10-02

What the 2026 data shows

No diphtheria case count has been reported for Czechia so far in 2026. The full year 2025 closed at 87 cases. 2025 closed 383% above the 2023–2024 average, which is why the trend reads “Rising”.

ENCLAI has logged 45 surveillance records for diphtheria in Czechia in 2026, with the most detailed reporting in Oct 2026 (36 records); the case counts run to 2026-05-01. 2 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: ECDC Surveillance Atlas of Infectious Diseases

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Surveillance summary

2026 cases (YTD)
not reported
2025 cases (full year)
87
Baseline avg (3yr)
N/A
Trend (2025)
▲ Rising · 2025
+383% vs 2023–2024 average

Reported cases by year, Czechia

YearReported casesShare of worldwide reports
2023 7 0.5%
2024 29 2.4%
2025 87 8.3%
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 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
Jan 202611
Feb 202611
Mar 202631
Apr 202611
May 202631
Oct 2026361

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 Czechia with the most diphtheria records this year:

AreaRecords
Moravian-Silesian Region4
Olomouc Region3
Prague3
Vysočina3
Zlín3

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 Czechia, 2026

Disease2026 casesTrend
Scabies 7,105 ▲ Rising · 2025
COVID-19 4,808 ▼ Declining · 2025
Seasonal influenza 1,700 ▲ Rising · 2025
Respiratory syncytial virus infection 1,498 ≈ Stable · 2025
Measles 4 ▲ Rising · 2025

Questions about this page

How many diphtheria cases has Czechia reported in 2026?
No diphtheria case count has been reported for Czechia so far in 2026. The full year 2025 closed at 87 cases. 2025 closed 383% above the 2023–2024 average, which is why the trend reads “Rising”.
Is diphtheria rising or falling in Czechia?
ENCLAI's trend reading for diphtheria in Czechia is “Rising · 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 Czechia publish diphtheria surveillance data?
The counts on this page were published by 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. Czechia 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 Czechia 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.

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.