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

Pneumococcal disease in United States: 2026 cases and outbreak reports

Reported pneumococcal disease surveillance for United States (USA) — — latest record 2026-10-25

What the 2026 data shows

As of 25 October 2026, the United States has reported 10,685 pneumococcal disease cases in 2026, compiled from figures published by CDC NNDSS Weekly Notifiable Diseases (State-Level). The full year 2025 closed at 19,221 cases.

Of the 14 countries reporting pneumococcal disease to ENCLAI in 2026, United States accounts for 49.1% of reported cases and ranks 1 by case count.

ENCLAI has logged 4,602 surveillance records for pneumococcal disease in United States in 2026, with the most detailed reporting in Aug 2026 (584 records). 363 of those arrived in the last 30 days; the case counts run to 2026-10-25. 1 distinct surveillance sources reported this pair in 2026.

Reporting authorities for these counts: CDC NNDSS Weekly Notifiable Diseases (State-Level)

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Surveillance summary

2026 cases (YTD)
10,685
2025 cases (full year)
19,221
Baseline avg (3yr)
N/A
Trend (2025)
—
No comparable earlier years

Reported cases by year, United States

YearReported casesShare of worldwide reports
2023 not reported —
2024 incomplete year —
2025 19,221 56.8%
2026 (year to date) 10,685 49.1%

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 pneumococcal disease 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
Jan 20263521
Feb 20263361
Mar 20264951
Apr 20264221
May 20265481
Jun 20264531
Jul 20264601
Aug 20265841
Sep 20264691
Oct 20264831

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. 363 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within United States with the most pneumococcal disease records this year:

AreaRecords
Florida176
Ohio174
Utah171
New York160
Pennsylvania157

Pneumococcal disease in other countries, 2026

Country2026 casesTrend
Spain 2,854 ▼ Declining · 2025
Poland 2,801 ≈ Stable · 2025
Australia 2,139
Brazil 1,023 ≈ Stable · 2025
Germany 586

Other diseases reported in United States, 2026

Disease2026 casesTrend
Chlamydia infection 620,278
Gonococcal infection 202,064
Hepatitis C 62,543 ▲ Rising · 2025
Campylobacteriosis 38,167 ▲ Rising · 2025
Non-typhoidal salmonellosis 26,618

Questions about this page

How many pneumococcal disease cases has United States reported in 2026?
As of 25 October 2026, the United States has reported 10,685 pneumococcal disease cases in 2026, compiled from figures published by CDC NNDSS Weekly Notifiable Diseases (State-Level). The full year 2025 closed at 19,221 cases.
Where does United States publish pneumococcal disease surveillance data?
The counts on this page were published by CDC NNDSS Weekly Notifiable Diseases (State-Level). 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. United States 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 pneumococcal disease records for United States dated from 2024. 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.