Reported listeriosis surveillance for United States (USA) — ▲ Rising · 2025 — latest record 2026-11-08
As of 8 November 2026, the United States has reported 718 listeriosis cases in 2026, as published by CDC NNDSS Weekly Notifiable Diseases (State-Level) (1 other reporting authority also reports it). The full year 2025 closed at 861 cases. The three-year baseline for United States is 293 cases a year. 2025 closed 194% above 3yr avg (WHO historical series), which is why the trend reads “Rising”.
Of the 15 countries reporting listeriosis to ENCLAI in 2026, United States accounts for 44.1% of reported cases and ranks 1 by case count.
ENCLAI has logged 2,033 surveillance records for listeriosis in United States in 2026, with the most detailed reporting in Aug 2026 (313 records). 211 of those arrived in the last 30 days; the case counts run to 2026-11-08. 2 distinct surveillance sources reported this pair in 2026.
Reporting authorities for these counts: CDC NNDSS Weekly Notifiable Diseases (State-Level) · CDC — multistate foodborne outbreak notices
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 | incomplete year | — |
| 2025 | 861 | 42.6% |
| 2026 (year to date) | 718 | 44.1% |
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 listeriosis 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 |
|---|---|---|
| Jan 2026 | 115 | 1 |
| Feb 2026 | 90 | 1 |
| Mar 2026 | 153 | 1 |
| Apr 2026 | 146 | 1 |
| May 2026 | 238 | 1 |
| Jun 2026 | 206 | 1 |
| Jul 2026 | 229 | 1 |
| Aug 2026 | 313 | 1 |
| Sep 2026 | 264 | 1 |
| Oct 2026 | 276 | 2 |
| Nov 2026 | 3 | 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. 211 records were logged in the last 30 days.
Areas within United States with the most listeriosis records this year:
| Area | Records |
|---|---|
| Tennessee | 83 |
| New Mexico | 81 |
| Ohio | 79 |
| North Carolina | 74 |
| Alabama | 73 |
Listeriosis in the US: 281 reported cases in the 90 days to 29 September, 51 of them in the 30 days to 29 September, 141 in the 30 days before that, 108 in the same 30 days a year earlier. Counts are as reported by the o
ENCLAI verified 226 listeriosis cases in the United States over the last 90 days, with 60 recorded in the most recent 30-day period.
ENCLAI verified 320 listeriosis cases in the US over 90 days. The aggregate trend across reporting countries has risen over the past 12 weeks.
| Country | 2026 cases | Trend |
|---|---|---|
| Spain | 269 | ≈ Stable · 2025 |
| Poland | 215 | ▲ Rising · 2025 |
| Taiwan | 150 | ≈ Stable · 2025 |
| Australia | 66 | |
| Germany | 62 | ▼ Declining · 2025 |
| Disease | 2026 cases | Trend |
|---|---|---|
| Chlamydia infection | 620,278 | |
| Gonococcal infection | 202,064 | |
| Hepatitis C | 62,543 | ▲ Rising · 2025 |
| Campylobacteriosis | 38,167 | ▲ Rising · 2025 |
| Non-typhoidal salmonellosis | 26,618 |
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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.
