Side effects of the diphtheria vaccine

The injection can briefly activate the immune system, causing tenderness, warmth or swelling where it was given. Some people feel tired, achy or mildly feverish for a short period. These reactions generally settle without special treatment. The vaccine does not cause diphtheria. A sore throat after vaccination may have another cause, such as a separate infection, so consider the full pattern of symptoms rather than linking every illness to the injection.

Rest, drink fluids and move the arm gently. A cool, clean cloth may ease local discomfort. If you need pain or fever relief, use a product suitable for your age and health, following the label or advice from a clinician. Do not scratch the injection site. Keep the vaccination record and tell your healthcare professional about previous reactions, allergies, pregnancy or immune problems before a future dose. Childhood Immunisation advice can help clarify the wider schedule.

Call emergency services for difficulty breathing, swelling of the face or throat, widespread hives, collapse, severe dizziness or sudden weakness after vaccination. Contact a clinician promptly if the injection-site swelling is rapidly increasing, pain is severe, fever is persistent, or symptoms are getting worse instead of settling. Antibiotic Treatment is not used for an ordinary vaccine reaction; it is prescribed only when a clinician diagnoses a bacterial infection.

Ask which reactions are expected with your vaccine, what pain relief is safe for you, whether a later dose should be adjusted, and how to record the event. Mention any previous allergy, fainting episode or severe reaction.