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

Syphilis in Switzerland: 2026 cases and outbreak reports

Reported syphilis surveillance for Switzerland (CHE) — ≈ Stable · 2025 — latest record 2026-05-15

What the 2026 data shows

No syphilis case count has been reported for Switzerland so far in 2026. The full year 2025 closed at 1,106 cases. 2025 closed 1% below the 2023–2024 average, which is why the trend reads “≈ Stable”.

ENCLAI has logged 7 surveillance records for syphilis in Switzerland in 2026, with the most detailed reporting in May 2026 (7 records). 1 distinct surveillance sources reported this pair in 2026.

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Surveillance summary

2026 cases (YTD)
not reported
2025 cases (full year)
1,106
Baseline avg (3yr)
N/A
Trend (2025)
≈ Stable · 2025
-1% vs 2023–2024 average

Reported cases by year, Switzerland

YearReported casesShare of worldwide reports
2023 1,128 0.4%
2024 1,098 0.3%
2025 1,106 0.2%
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 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
May 202671

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.

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 Switzerland, 2026

Disease2026 casesTrend
Seasonal influenza 15,647 ▲ Rising · 2025
Campylobacteriosis 7,834 ≈ Stable · 2025
Lyme borreliosis 7,480 ≈ Stable · 2025
COVID-19 3,895 ▼ Declining · 2025
Non-typhoidal salmonellosis 2,074 ≈ Stable · 2025

Questions about this page

How many syphilis cases has Switzerland reported in 2026?
No syphilis case count has been reported for Switzerland so far in 2026. The full year 2025 closed at 1,106 cases. 2025 closed 1% below the 2023–2024 average, which is why the trend reads “≈ Stable”.
Is syphilis rising or falling in Switzerland?
ENCLAI's trend reading for syphilis in Switzerland is “≈ Stable · 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. Switzerland 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 Switzerland dated from 2019. 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.