What should you do if a fever develops after a tick vaccine? - briefly
If a fever appears after the tick vaccine, treat it with an appropriate antipyretic (e.g., acetaminophen) and watch the temperature; contact a medical professional promptly if the fever lasts more than 24–48 hours or is accompanied by severe symptoms.
What should you do if a fever develops after a tick vaccine? - in detail
If a temperature rises after a tick‑preventive immunization, take the following actions:
- Measure the fever accurately with a reliable thermometer. Record the exact reading and the time it started.
- Keep fluid intake high. Offer water, oral rehydration solutions, or clear broths to prevent dehydration.
- Administer an approved antipyretic such as acetaminophen or ibuprofen according to the dosing instructions for the recipient’s age and weight. Do not exceed the recommended maximum dose.
- Observe for additional symptoms: rash, swelling at the injection site, joint pain, headache, nausea, or any change in behavior. Note their onset and severity.
- Contact a healthcare professional promptly. Provide the measured temperature, the timing of the vaccine, any accompanying signs, and the medications already taken.
- Follow the clinician’s guidance, which may include:
- Do not administer another dose of the same vaccine until a medical evaluation confirms it is safe.
If the fever persists for more than 48 hours, exceeds 39.5 °C (103 °F), or is accompanied by severe symptoms such as difficulty breathing, persistent vomiting, or a rapidly spreading rash, seek emergency medical attention immediately.