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

Hepatitis A in Mexico: 2026 cases and outbreak reports

Reported hepatitis a surveillance for Mexico (MEX) — ▼ Declining · 2025 — latest record 2026-10-02

What the 2026 data shows

No Hepatitis A case count has been reported for Mexico so far in 2026. The full year 2025 closed at 4,500 cases. 2025 closed 45% below the 2023–2024 average, which is why the trend reads “Declining”.

ENCLAI has logged 240 surveillance records for hepatitis a in Mexico in 2026, with the most detailed reporting in Oct 2026 (237 records). 3 distinct surveillance sources reported this pair in 2026.

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Surveillance summary

2026 cases (YTD)
not reported
2025 cases (full year)
4,500
Baseline avg (3yr)
N/A
Trend (2025)
▼ Declining · 2025
-45% vs 2023–2024 average

Reported cases by year, Mexico

YearReported casesShare of worldwide reports
2023 7,080 27.9%
2024 9,293 32.9%
2025 4,500 12.8%
2026 (year to date) not reported —

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 a 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
Oct 20262372

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.

Sub-national reporting, 2026

Areas within Mexico with the most hepatitis a records this year:

AreaRecords
Baja California4
Baja California Sur4
Chihuahua4
Coahuila4
Guerrero4

Hepatitis A in other countries, 2026

Country2026 casesTrend
China 5,142
Poland 2,019
South Korea 1,700 ≈ Stable · 2025
Spain 727 ▲ Rising · 2025
Taiwan 677 ▲ Rising · 2025

Other diseases reported in Mexico, 2026

Disease2026 casesTrend
Measles 13,148
Dengue fever 8,543 ▼ Declining · 2025
Seasonal influenza 7,565 ▼ Declining · 2025
COVID-19 3,057 ▼ Declining · 2025

Questions about this page

How many Hepatitis A cases has Mexico reported in 2026?
No Hepatitis A case count has been reported for Mexico so far in 2026. The full year 2025 closed at 4,500 cases. 2025 closed 45% below the 2023–2024 average, which is why the trend reads “Declining”.
Is Hepatitis A rising or falling in Mexico?
ENCLAI's trend reading for Hepatitis A in Mexico 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.

About this data

Figures are reported case counts as published by the originating health authorities, compiled by ENCLAI from 444 verified surveillance sources. Mexico 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 a records for Mexico dated from 2015. 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.