General information, not a diagnosis Method and limitations

Fact sheetBacteria

Diphtheria

Diphtheria is a bacterial infection whose toxin can cause serious damage. Incomplete vaccination leaves people exposed vulnerable.

Documentary Enrichment: · General information

Essentials

Transmissible bacterial infection that can reach the respiratory tract and produce a dangerous toxin.

Agent
Corynebacterium diphtheriae
Transmission or exposure
Respiratory tract · Close contact

Situation and vulnerability

People who are not or insufficiently vaccinated are at risk. Discontinuations of vaccination and promiscuity favour outbreaks; carriers without signs can transmit the bacteria.

Signs and limits of their interpretation

Throat pain, fever, neck ganglia and weakness may accompany a grey coating that interferes with swallowing or breathing. Heart or nerve damage is possible.

Diagnosis and monitoring

Confirmation must be arranged quickly. The treatment of suspicion should not be delayed pending the results; breathing difficulties are urgent.

Official sources consulted on . Documentary summary, without medical rereading.

Check these benchmarks in the WHO reference →

Prevention and care

Suspicion requires rapid care, sometimes with antitoxin and antibiotics. Contacts should follow the assessment proposed by the authorities and verify their vaccination.

Practical issues

Has he had diphtheria dispensed with vaccination?

No. WHO also recommends post-acute vaccination in people who have had the disease. The professional specifies the necessary doses according to history and local recommendations.

Preparing for an exchange with a professional

  • Vaccine diary and latest recalls
  • Beginning of throat or breathing disorders
  • Close contacts and travel

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.
A calm clinical consultation desk, blank folder, glass of water and an unmarked notebook. AI-generated illustration.
Prevention illustration — Diphtérie — A calm clinical consultation desk, blank folder, glass of water and an unmarked notebook.
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.

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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.