Reported lassa fever surveillance for Liberia (LBR) — — latest record 2026-11-03
As of 25 October 2026, Liberia has reported 249 lassa fever cases in 2026, as published by Liberia NPHIL and 2 other reporting authorities. No 2025 figure has been reported.
Of the 4 countries reporting lassa fever to ENCLAI in 2026, Liberia accounts for 17.9% of reported cases and ranks 2 by case count.
ENCLAI has logged 169 surveillance records for lassa fever in Liberia in 2026, with the most detailed reporting in Oct 2026 (156 records). 21 of those arrived in the last 30 days; the case counts run to 2026-10-25. 4 distinct surveillance sources reported this pair in 2026.
Reporting authorities for these counts: Liberia NPHIL — IDSR Weekly Epidemiology and Surveillance Bulletin · WHO AFRO Weekly Bulletin — cumulative suspected cases · WHO AFRO Weekly Bulletin on Outbreaks and Other Emergencies
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.
| Year | Reported cases | Share of worldwide reports |
|---|---|---|
| 2023 | not reported | — |
| 2024 | not reported | — |
| 2025 | not reported | — |
| 2026 (year to date) | 249 | 17.9% |
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 lassa 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.
| Month | Records | Reporting sources |
|---|---|---|
| Apr 2026 | 1 | 1 |
| May 2026 | 1 | 1 |
| Jun 2026 | 1 | 1 |
| Sep 2026 | 1 | 1 |
| Oct 2026 | 156 | 3 |
| Nov 2026 | 9 | 1 |
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. 21 records were logged in the last 30 days.
Areas within Liberia with the most lassa fever records this year:
| Area | Records |
|---|---|
| Bong County | 29 |
| Montserrado County | 22 |
| Grand Bassa County | 21 |
| Nimba | 14 |
| Lofa County | 8 |
| Country | 2026 cases | Trend |
|---|---|---|
| Nigeria | 1,138 | |
| Guinea | 4 (outbreak total to date) | |
| Sierra Leone | 1 (outbreak total to date) |
| Disease | 2026 cases | Trend |
|---|---|---|
| Mpox (monkeypox) | 1,687 (outbreak total to date) | |
| Dengue fever | 1 (outbreak total to date) | |
| Yellow fever | 1 |
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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.
