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

Dengue fever in South Korea: 2026 cases and outbreak reports

Reported dengue fever surveillance for South Korea (KOR) — ▼ Declining · 2025 — latest record 2026-11-03

What the 2026 data shows

As of 26 October 2026, South Korea has reported 92 dengue fever cases in 2026, compiled from figures published by South Korea KDCA. The full year 2025 closed at 110 cases. 2025 closed 44% below 2024, which is why the trend reads “Declining”.

Of the 43 countries reporting dengue fever to ENCLAI in 2026, South Korea accounts for 0.0% of reported cases and ranks 29 by case count.

ENCLAI has logged 139 surveillance records for dengue fever in South Korea in 2026, with the most detailed reporting in Jul 2026 (115 records). 6 of those arrived in the last 30 days; the case counts run to 2026-10-26. 1 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: South Korea KDCA

Key facts: Dengue fever

Transmission
Aedes aegypti bite
Other Aedes species also transmit. Extrinsic incubation in the mosquito ≈8–12 days at 25–28 °C.WHO 2025 · CDC 2025
Incubation
4–6 days (up to 14)
After the bite; illness lasts 2–7 days and most recover in about a week.Oxford Hb 2025 · CDC 2025
Vaccine
TAK-003 (Qdenga)
WHO-recommended for children aged 6–16 in high-transmission settings; further vaccines under evaluation.WHO 2025

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

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Surveillance summary

2026 cases (YTD)
92
2025 cases (full year)
110
Baseline avg (3yr)
N/A
Trend (2025)
▼ Declining · 2025
-44% vs 2024

Reported cases by year, South Korea

YearReported casesShare of worldwide reports
2023 not reported —
2024 196 0.0%
2025 110 0.0%
2026 (year to date) 92 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 dengue fever 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 202631
Apr 202631
Jun 202621
Jul 20261151
Aug 202641
Sep 202641
Oct 202671
Nov 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. 6 records were logged in the last 30 days.

Dengue fever in other countries, 2026

Country2026 casesTrend
Brazil 385,610 ▼ Declining · 2025
Vietnam 131,202
Bangladesh 115,617
Colombia 97,678
Sri Lanka 93,420

Other diseases reported in South Korea, 2026

Disease2026 casesTrend
Carbapenem-resistant organism infection 46,917 ≈ Stable · 2025
Varicella 32,970 ≈ Stable · 2025
Scarlet fever 11,108 ▲ Rising · 2025
Mumps 5,424 ≈ Stable · 2025
Hepatitis C 4,933 ≈ Stable · 2025

Questions about this page

How many dengue fever cases has South Korea reported in 2026?
As of 26 October 2026, South Korea has reported 92 dengue fever cases in 2026, compiled from figures published by South Korea KDCA. The full year 2025 closed at 110 cases. 2025 closed 44% below 2024, which is why the trend reads “Declining”.
Is dengue fever rising or falling in South Korea?
ENCLAI's trend reading for dengue fever in South Korea 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 South Korea publish dengue fever surveillance data?
The counts on this page were published by South Korea KDCA. 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. South Korea 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 dengue fever records for South Korea 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.