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West Sussex county · 2025

STIs diagnosed

262.5

New STI diagnoses per 100,000, excluding chlamydia in people aged 24 and under.

40th lowest STI diagnosis rate of 153 upper-tier authorities

New STI diagnoses excluding chlamydia in people aged 24 and under · Persons, All ages

England: 441.2 · 2025

healthcards · West Sussex · 2025

What this means

West Sussex recorded 262.5 new STI diagnoses per 100,000 residents in 2025 — 2,402 diagnoses. The measure excludes chlamydia diagnoses in people aged 24 and under.

Source denominator: 915,037 residents. This is a crude diagnosis rate, not age-standardised; diagnoses are not unique people.

England: 441.2 per 100,000. Diagnosis rates also reflect access to testing and testing activity, so this is not a simple league table of infection prevalence.

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Source & provenance

Indicator:
New STI diagnoses excluding chlamydia in people aged 24 and under (ID 91306)
Source:
UK Health Security Agency surveillance systems via OHID Fingertips
Area:
West Sussex (E10000032), Upper-tier local authority (post Apr 2023)
Period:
2025; retrieved 2026-10-14 (distinct from reporting period)
Population:
Persons, All ages

View source ↗

Caveats

  • Excludes chlamydia diagnoses in people aged 24 and under; it is not a count of every new STI diagnosis.
  • Higher diagnosis can reflect more infection, more testing, better access to services, or a combination of these.
  • People can receive more than one diagnosis, so the count is diagnoses rather than unique people.
  • 95% confidence interval: 252.1 to 273.2 per 100,000.
  • Derived from the published point estimates for 153 upper-tier authorities with data. Exact ties share a rank. Overlapping confidence intervals mean nearby ranks may not be meaningfully different.
  • A lower diagnosis rate is not automatically better because access to testing and testing activity affect the measure.

Missing or suppressed values are never shown as zero — every card above passed validation with a real numeric value.