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

Dengue fever in Vietnam: 2026 cases and outbreak reports

Reported dengue fever surveillance for Vietnam (VNM) — — latest record 2026-11-06

What the 2026 data shows

As of 1 November 2026, Vietnam has reported 131,202 dengue fever cases in 2026, as published by WHO WPRO Dengue Situation Update (Viet Nam national figures) and 1 other reporting authority. No 2025 figure has been reported.

Of the 44 countries reporting dengue fever to ENCLAI in 2026, Vietnam accounts for 13.5% of reported cases and ranks 2 by case count.

ENCLAI has logged 60 surveillance records for dengue fever in Vietnam in 2026, with the most detailed reporting in Aug 2026 (11 records). 8 of those arrived in the last 30 days; the case counts run to 2026-11-01. 5 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: WHO WPRO Dengue Situation Update (Viet Nam national figures) · HCDC — Ho Chi Minh City CDC weekly dengue / hand-foot-mouth situation

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)
131,202
2025 cases (full year)
not reported
Baseline avg (3yr)
N/A
Trend (2025)
—
No 2025 figure

Reported cases by year, Vietnam

YearReported casesShare of worldwide reports
2023 not reported —
2024 not reported —
2025 not reported —
2026 (year to date) 131,202 13.5%

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 202621
Apr 202662
May 202681
Jun 202641
Jul 202682
Aug 2026114
Sep 2026113
Oct 202664
Nov 202642

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. 8 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within Vietnam with the most dengue fever records this year:

AreaRecords
Ho Chi Minh City (HCMC)38

Dengue fever briefings for Vietnam

All briefings →

Dengue fever in other countries, 2026

Country2026 casesTrend
Brazil 385,610 ▼ Declining · 2025
Bangladesh 115,617
Colombia 97,678
Sri Lanka 93,420
Malaysia 81,089

Other diseases reported in Vietnam, 2026

Disease2026 casesTrend
Hand, foot and mouth disease 45,911
Invasive meningococcal disease 95 (outbreak total to date)

Questions about this page

How many dengue fever cases has Vietnam reported in 2026?
As of 1 November 2026, Vietnam has reported 131,202 dengue fever cases in 2026, as published by WHO WPRO Dengue Situation Update (Viet Nam national figures) and 1 other reporting authority. No 2025 figure has been reported.
Where does Vietnam publish dengue fever surveillance data?
The counts on this page were published by WHO WPRO Dengue Situation Update (Viet Nam national figures) and HCDC — Ho Chi Minh City CDC weekly dengue / hand-foot-mouth situation. 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. Vietnam 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 Vietnam dated from 2007. 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.