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

Legionnaires' disease in Ukraine: 2026 cases and outbreak reports

Reported legionnaires' disease surveillance for Ukraine (UKR) — ▼ Declining · 2025 — latest record 2026-10-05

What the 2026 data shows

As of 30 September 2026, Ukraine has reported 2 legionnaires' disease cases in 2026, compiled from figures published by Ukraine Public Health Center. The full year 2025 closed at 1 cases. 2025 closed 50% below 2024, which is why the trend reads “Declining”.

Of the 10 countries reporting legionnaires' disease to ENCLAI in 2026, Ukraine accounts for 0.0% of reported cases and ranks 10 by case count.

ENCLAI has logged 7 surveillance records for legionnaires' disease in Ukraine in 2026, with the most detailed reporting in Oct 2026 (7 records); the case counts run to 2026-09-30. 1 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: Ukraine Public Health Center — Form No. 1, infectious and parasitic diseases

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Surveillance summary

2026 cases (YTD)
2
2025 cases (full year)
1
Baseline avg (3yr)
N/A
Trend (2025)
▼ Declining · 2025
-50% vs 2024

Reported cases by year, Ukraine

YearReported casesShare of worldwide reports
2023 not reported —
2024 2 0.0%
2025 1 0.0%
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 legionnaires' disease 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
Oct 202671

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 Ukraine with the most legionnaires' disease records this year:

AreaRecords
Kyiv1

Legionnaires' disease in other countries, 2026

Country2026 casesTrend
Germany 2,429 ▲ Rising · 2025
Spain 1,219 ≈ Stable · 2025
Taiwan 573 ▲ Rising · 2025
Poland 428 ≈ Stable · 2025
Hong Kong 153

Other diseases reported in Ukraine, 2026

Disease2026 casesTrend
Seasonal influenza 33,426 ▲ Rising · 2025
Lyme borreliosis 5,259 ▲ Rising · 2025
Non-typhoidal salmonellosis 2,806 ≈ Stable · 2025
Giardiasis 2,534 ≈ Stable · 2025
Scabies 2,480 ≈ Stable · 2025

Questions about this page

How many legionnaires' disease cases has Ukraine reported in 2026?
As of 30 September 2026, Ukraine has reported 2 legionnaires' disease cases in 2026, compiled from figures published by Ukraine Public Health Center. The full year 2025 closed at 1 cases. 2025 closed 50% below 2024, which is why the trend reads “Declining”.
Is legionnaires' disease rising or falling in Ukraine?
ENCLAI's trend reading for legionnaires' disease in Ukraine 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 Ukraine publish legionnaires' disease surveillance data?
The counts on this page were published by Ukraine Public Health Center — Form No. 1, infectious and parasitic 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. Ukraine 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 legionnaires' disease records for Ukraine dated from 2019. 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.