SE Asia 26 Sep 2026 · Dr Natalya Mathur
ENCLAI ID ENCLAI-2026-0000446-6 · Cite

Flu in Taiwan: 1,675 cases in the year to September

ENCLAI SURVEILLANCE BRIEFING · 26 SEPTEMBER 2026Flu in Taiwan: 1,675 cases in the yearto SeptemberSeasonal influenza · Taiwan · reported cases4reported cases in the 30 days to 27 SeptemberNo change from the 30 days before (4)4The 30 daysbefore1,67590 days to 27September1,1392026 so far25 of 39rank, reportingcountriesThree 30-day windows430 days before4Last 30 daysLargest counts, last 12 monthsChina14,169,255Germany257,444Australia202,040Thailand178,558Canada85,053Taiwan1,67541 countries with a reported count in this windowWhat this briefing shows1Reported flu cases in Taiwan held at 4 across the two latest 30-daywindows.2Taiwan accounts for 0.0% of the flu cases reported to ENCLAIworldwide in 2026 and ranks 25 of 39 reporting countries.32025 closed at 2,333 reported cases.Read with care: reports to official surveillance, not people and not a rate. A change between30-day windows can come from reporting timing as much as from transmission.Source: official surveillance reports compiled by ENCLAI · data as of 2026-09-27 ·enclai.net/newsVerify every figure against the source data before use; ENCLAI does not guarantee accuracy orcompleteness.
  1. Reported flu cases in Taiwan held at 4 across the two latest 30-day windows.
  2. Taiwan accounts for 0.0% of the flu cases reported to ENCLAI worldwide in 2026 and ranks 25 of 39 reporting countries.
  3. 2025 closed at 2,333 reported cases.
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Largest included reported counts (6 of 41 countries) · 2025-09-27 through 2026-09-27 · source-record dates; coverage varies
China14,169,255
Germany257,444
Australia202,040
Thailand178,558
Canada85,053
Finland37,015
Seasonal influenza — Taiwan · reported surveillance count · 2025-09-27 through 2026-09-27 · inclusive source-record dates
Seasonal influenza — Taiwan · reported surveillance count · 2026-08-28 through 2026-09-27 · inclusive source-record dates
Seasonal influenza — Taiwan · reported surveillance count · 2026-07-28 through 2026-08-27 · inclusive source-record dates
Seasonal influenza — Taiwan · reported surveillance count · 2025-08-28 through 2025-09-27 · inclusive source-record dates
Seasonal influenza · combined reported surveillance count · 2025-09-27 through 2026-09-27 · inclusive source-record dates
Seasonal influenza · weekly reported-count series · Weeks starting 2026-06-22 through 2026-09-07
Largest included reported counts (6 of 41 countries) · 2025-09-27 through 2026-09-27 · source-record dates; coverage varies

The full briefing

Full 2026 picture: Seasonal influenza in Taiwan — reported cases by year, monthly records and every briefing for this pair.

Taiwan reported 1,675 flu cases in the year to 27 September. 4 of them came in the 30 days to 27 September, against 4 in the 30 days before.

Why it matters

Taiwan accounts for 0.0% of the flu cases reported to ENCLAI worldwide so far in 2026. It ranks 25 of 39 reporting countries.

The numbers

PeriodReported cases
Last 30 days (to 27 September)4
The 30 days before that4
Year to 27 September1,675
2026 so far (ENCLAI export)1,139
The card shows flu in Taiwan. It compares the last 30 days with the 30 days before, as reported to ENCLAI.
The card shows flu in Taiwan. It compares the last 30 days with the 30 days before, as reported to ENCLAI.

What the source says

These figures come from official surveillance reports. They count reports, not people. They are not an incidence rate, the rate of new cases in a population. They do not cover the whole population. The reporting periods do not match these dates exactly. Some reports are incomplete or still in progress. Some run past the window. Some reports do not say which date they use: symptom onset, notification, or confirmation.

Where to learn more

Seasonal influenza in Taiwan: the 2026 picture · Seasonal influenza worldwide · Taiwan: all diseases · How to read these counts

Retained reporting context

Included reporting countries

Seasonal influenza

15,254,415

combined reported surveillance count

2025-09-27 through 2026-09-27 · inclusive source-record dates

For Seasonal influenza, the combined reported surveillance count across the 41 countries with positive reported counts in this selection is 15,254,415. The selection uses source-record dates 2025-09-27 through 2026-09-27, inclusive. This covers only these reporting countries; source periods and completeness vary.

Exact included country membership
CountryReported countSource-record dates
Argentina7702025-09-27 through 2026-09-27
Australia202,0402025-09-27 through 2026-09-27
Austria2,1002025-09-27 through 2026-09-27
Belgium21,0412025-09-27 through 2026-09-27
Bulgaria8552025-09-27 through 2026-09-27
Canada85,0532025-09-27 through 2026-09-27
Switzerland24,8452025-09-27 through 2026-09-27
China14,169,2552025-09-27 through 2026-09-27
Czechia3,6732025-09-27 through 2026-09-27
Germany257,4442025-09-27 through 2026-09-27
Denmark23,4232025-09-27 through 2026-09-27
Spain20,7942025-09-27 through 2026-09-27
Estonia6,5142025-09-27 through 2026-09-27
Finland37,0152025-09-27 through 2026-09-27
France30,2082025-09-27 through 2026-09-27
United Kingdom2,4422025-09-27 through 2026-09-27
Hong Kong12025-09-27 through 2026-09-27
Croatia8432025-09-27 through 2026-09-27
Hungary2752025-09-27 through 2026-09-27
Ireland3,2232025-09-27 through 2026-09-27
Iceland1,0152025-09-27 through 2026-09-27
Italy11,0002025-09-27 through 2026-09-27
Lithuania1,5982025-09-27 through 2026-09-27
Luxembourg8,0822025-09-27 through 2026-09-27
Latvia642025-09-27 through 2026-09-27
Mexico33,9892025-09-27 through 2026-09-27
North Macedonia692025-09-27 through 2026-09-27
Malta4,3232025-09-27 through 2026-09-27
Montenegro2,8602025-09-27 through 2026-09-27
Netherlands14,4702025-09-27 through 2026-09-27
Norway34,8962025-09-27 through 2026-09-27
Nepal282025-09-27 through 2026-09-27
Poland5,1852025-09-27 through 2026-09-27
Portugal17,3672025-09-27 through 2026-09-27
Romania1,4002025-09-27 through 2026-09-27
Slovakia5,5992025-09-27 through 2026-09-27
Slovenia3,3802025-09-27 through 2026-09-27
Sweden21,7742025-09-27 through 2026-09-27
Thailand178,5582025-09-27 through 2026-09-27
Taiwan1,6752025-09-27 through 2026-09-27
United States15,2692025-09-27 through 2026-09-27

Snapshot 2026-09-27

Weekly reporting history

Seasonal influenza

weekly reported-count series

Weeks starting 2026-06-22 through 2026-09-07

A retained retrospective weekly reported-count series across included reporting countries. Country membership and reporting completeness can vary by week. Missing weeks remain gaps. This is a separate report-series measure; it does not establish exact incidence or laboratory confirmation.

Retained weekly report series
WeekReported count
2026-06-22 through 2026-06-2816151
2026-06-29 through 2026-07-0514120
2026-07-06 through 2026-07-1212645
2026-07-13 through 2026-07-1916894
2026-07-20 through 2026-07-2612989
2026-07-27 through 2026-08-0217639
2026-08-03 through 2026-08-0910940
2026-08-10 through 2026-08-1621677
2026-08-17 through 2026-08-2317993
2026-08-24 through 2026-08-3024132
2026-08-31 through 2026-09-0638372
2026-09-07 through 2026-09-1337182

Snapshot 2026-09-26

Sources and limitations

  • Window. Each quantity keeps its recorded source-selection dates and coverage notes. Dated batches and weekly or genomic observations retain their separate measures. Publication or capture dates do not establish case onset, equal cohorts or period completeness.
  • Denominator. The retained counts do not establish complete populations, equal reporting cohorts or incidence rates. Source period bounds and definitions can differ.
  • Case definition. Case definitions are set nationally and change over time. Counts for the same disease in different countries may not be counting the same thing.
  • Revisions. Agencies restate figures. Values here are as reported at the time of publication; see the update history below.

ENCLAI counts reflect verified records available from reporting sources for the stated window. They are not estimates of total incidence and should not be interpreted as medical advice. Full methodology: the dataset.

Review and corrections

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