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

Syphilis in Puerto Rico: 2026 cases and outbreak reports

Reported syphilis surveillance for Puerto Rico (PRI) — — latest record 2026-10-25

What the 2026 data shows

As of 25 October 2026, Puerto Rico has reported 142 syphilis cases in 2026, compiled from figures published by CDC NNDSS Weekly Notifiable Diseases (State-Level). The full year 2025 closed at 83 cases.

Of the 20 countries reporting syphilis to ENCLAI in 2026, Puerto Rico accounts for 0.1% of reported cases and ranks 13 by case count.

ENCLAI has logged 60 surveillance records for syphilis in Puerto Rico in 2026, with the most detailed reporting in May 2026 (10 records). 6 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)
142
2025 cases (full year)
83
Baseline avg (3yr)
N/A
Trend (2025)
—
No comparable earlier years

Reported cases by year, Puerto Rico

YearReported casesShare of worldwide reports
2023 not reported —
2024 not reported —
2025 83 0.0%
2026 (year to date) 142 0.1%

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 syphilis 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 202621
Apr 202661
May 2026101
Jun 202681
Jul 202681
Aug 2026101
Sep 202681
Oct 202681

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. 6 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within Puerto Rico with the most syphilis records this year:

AreaRecords
Puerto Rico60

Syphilis in other countries, 2026

Country2026 casesTrend
China 161,768
United States 14,503
Colombia 8,776
Australia 6,836
Uruguay 6,349

Other diseases reported in Puerto Rico, 2026

Disease2026 casesTrend
Chlamydia infection 2,012
Hepatitis C 1,335
Dengue fever 940
Gonococcal infection 442
Non-typhoidal salmonellosis 331

Questions about this page

How many syphilis cases has Puerto Rico reported in 2026?
As of 25 October 2026, Puerto Rico has reported 142 syphilis cases in 2026, compiled from figures published by CDC NNDSS Weekly Notifiable Diseases (State-Level). The full year 2025 closed at 83 cases.
Where does Puerto Rico publish syphilis 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. Puerto Rico 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 syphilis records for Puerto Rico dated from 2025. 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.