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

Hepatitis B in South Korea: 2026 cases and outbreak reports

Reported hepatitis b surveillance for South Korea (KOR) — ≈ Stable · 2025 — latest record 2026-11-04

What the 2026 data shows

As of 26 October 2026, South Korea has reported 211 Hepatitis B cases in 2026, compiled from figures published by South Korea KDCA and 1 other reporting authority. The full year 2025 closed at 226 cases. 2025 closed 10% below 2024, which is why the trend reads “≈ Stable”.

Of the 24 countries reporting hepatitis b to ENCLAI in 2026, South Korea accounts for 0.1% of reported cases and ranks 10 by case count.

ENCLAI has logged 169 surveillance records for hepatitis b in South Korea in 2026, with the most detailed reporting in Jul 2026 (133 records). 9 of those arrived in the last 30 days; the case counts run to 2026-10-26. 2 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: South Korea KDCA · Korea Disease Control and Prevention Agency — Province-Level Surveillance

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Surveillance summary

2026 cases (YTD)
211
2025 cases (full year)
226
Baseline avg (3yr)
N/A
Trend (2025)
≈ Stable · 2025
-10% vs 2024

Reported cases by year, South Korea

YearReported casesShare of worldwide reports
2023 not reported —
2024 250 0.9%
2025 226 0.0%
2026 (year to date) 211 0.1%

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 hepatitis b 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 202661
Apr 202641
May 202641
Jun 202641
Jul 20261331
Aug 202631
Sep 202661
Oct 202671
Nov 202621

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. 9 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within South Korea with the most hepatitis b records this year:

AreaRecords
Gyeonggi-do1
Seoul1

Hepatitis B in other countries, 2026

Country2026 casesTrend
China 328,749
United States 19,931 ▲ Rising · 2025
Australia 4,650 ▲ Rising · 2025
Germany 2,830 ▼ Declining · 2025
Poland 2,827 ≈ Stable · 2025

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 Hepatitis B cases has South Korea reported in 2026?
As of 26 October 2026, South Korea has reported 211 Hepatitis B cases in 2026, compiled from figures published by South Korea KDCA and 1 other reporting authority. The full year 2025 closed at 226 cases. 2025 closed 10% below 2024, which is why the trend reads “≈ Stable”.
Is Hepatitis B rising or falling in South Korea?
ENCLAI's trend reading for Hepatitis B in South Korea is “≈ Stable · 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 Hepatitis B surveillance data?
The counts on this page were published by South Korea KDCA and Korea Disease Control and Prevention Agency — Province-Level Surveillance. 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 hepatitis b records for South Korea dated from 2024. How we verify and update data: methodology & Trust Center · understanding case counts.

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