Is seasonal influenza rising or falling in Iceland?

ENCLAI's trend reading for seasonal influenza in Iceland 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 Iceland publish seasonal influenza surveillance data?

The counts on this page were published by ECDC EU/EEA Respiratory Virus Weekly Data (GitHub). ENCLAI compiles and normalises them and is not affiliated with these authorities.

← Seasonal influenza worldwide · Iceland: all diseases

Compiled by the ENCLAI research team following a documented methodology · Editorial oversight: Dr Natalya Mathur, Founder · Data last updated: 2026-11-08 (UTC)

Seasonal influenza in Iceland: 2026 cases and outbreak reports

Reported seasonal influenza surveillance for Iceland (ISL) — ▲ Rising · 2025 — latest record 2026-11-06

What the 2026 data shows

As of 26 October 2026, Iceland has reported 370 seasonal influenza cases in 2026, as published by ECDC EU/EEA Respiratory Virus Weekly Data (GitHub). The full year 2025 closed at 1,350 cases. 2025 closed 60% above the 2023–2024 average, which is why the trend reads “Rising”.

Of the 45 countries reporting seasonal influenza to ENCLAI in 2026, Iceland accounts for 0.0% of reported cases and ranks 35 by case count.

ENCLAI has logged 330 surveillance records for seasonal influenza in Iceland in 2026, with the most detailed reporting in Apr 2026 (255 records). 13 of those arrived in the last 30 days; the case counts run to 2026-10-26. 3 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: ECDC EU/EEA Respiratory Virus Weekly Data (GitHub)

Key facts: Seasonal influenza

Transmission

Droplets

Coughs and sneezes infect people in close proximity.WHO 2025

Incubation

≈ 2 days

Range 1–4 days.WHO 2025

Vaccine

Annual vaccine

Priority: pregnant women, children 6 months–5 years, over-65s, chronic conditions, health workers. Less effective in older people but cuts severity and death.WHO 2025

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

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Surveillance summary

2026 cases (YTD)

370

2025 cases (full year)

1,350

Baseline avg (3yr)

N/A

Trend (2025)

▲ Rising · 2025

+60% vs 2023–2024 average

Reported cases by year, Iceland

Year	Reported cases	Share of worldwide reports
2023	841	0.1%
2024	847	0.1%
2025	1,350	0.0%
2026 (year to date)	370	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 seasonal influenza 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

Month	Records	Reporting sources
Apr 2026	255	2
May 2026	13	2
Jun 2026	1	1
Aug 2026	39	2
Sep 2026	7	3
Oct 2026	11	3
Nov 2026	4	2

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. 13 records were logged in the last 30 days.

Seasonal influenza in other countries, 2026

Country	2026 cases	Trend
China	2,235,702
Australia	269,750
Germany	186,937	▲ Rising · 2025
Ukraine	33,426	▲ Rising · 2025
Canada	30,717

Other diseases reported in Iceland, 2026

Disease	2026 cases	Trend
Respiratory syncytial virus infection	270	▼ Declining · 2025
COVID-19	208	▼ Declining · 2025
Measles	1

Questions about this page

How many seasonal influenza cases has Iceland reported in 2026?: As of 26 October 2026, Iceland has reported 370 seasonal influenza cases in 2026, as published by ECDC EU/EEA Respiratory Virus Weekly Data (GitHub). The full year 2025 closed at 1,350 cases. 2025 closed 60% above the 2023–2024 average, which is why the trend reads “Rising”.
Is seasonal influenza rising or falling in Iceland?: ENCLAI's trend reading for seasonal influenza in Iceland 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 Iceland publish seasonal influenza surveillance data?: The counts on this page were published by ECDC EU/EEA Respiratory Virus Weekly Data (GitHub). 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. Iceland 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 seasonal influenza records for Iceland dated from 2021. 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.