General information, not a diagnosis Method and limitations

Fact sheetBacteria

Syphilis

Syphilis is a treatable bacterial infection. It can go unnoticed and reach the foetus during pregnancy.

Documentary Enrichment: · General information

Essentials

Sexually transmitted infection evolving in several phases and transmissible during pregnancy.

Agent
Treponema pallidum
Transmission or exposure
Sexual use · Materno-infant transmission

Situation and vulnerability

An untreated infection may have late consequences. Screening during pregnancy is aimed at preventing congenital syphilis.

Signs and limits of their interpretation

Often painless ulceration can disappear without healing. A rash or symptom-free phase may then occur.

Diagnosis and monitoring

The professional interprets several tests and previous results. Some antibodies persist after treatment; their positivity is not sufficient to conclude reinfection.

Check these benchmarks in the WHO reference →

Prevention and care

Treatment, partner testing and serological follow-up complement each other. Eye or neurological damage should be reported promptly.

Practical issues

Does the disappearance of the canker mean that the infection is cured?

No. The evolution of the lesions may mask a persistent infection. Appropriate diagnosis and treatment are required.

Preparing for an exchange with a professional

  • Dates of contact and injuries
  • Serological results and previous treatments
  • Pregnancy and visual or neurological disorders

Bring the full minutes and dates. This information facilitates evaluation; its collection must not delay an urgent appeal.

Individual decisionThe choice of a test, treatment or prevention depends on the local situation and recommendations. In case of distress, call 911.
An empty public health consultation room, unmarked leaflets and switched-off computer. AI-generated illustration.
Prevention illustration — Syphilis — An empty public health consultation room, unmarked leaflets and switched-off computer.
Image generated by artificial intelligence. AI illustration; it does not depict a disease, biological agent or diagnosis.

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Related fact sheets

These sheets share ways or contexts of exhibition in our catalogue. This reconciliation does not establish a differential diagnosis.

Compare Syphilis with associated sheets →

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Further reading

These publications help you verify the concepts discussed. Disease records and directory entries each identify their sources.

The content modification date does not mean that every source has undergone a new medical review. Verification method and scope.