Received Jul 7, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| YF | YELLOW FEVER (STAMARIL) | SANOFI PASTEUR | UNK | — | — |
A 23-year-old female presents with acute onset of pruritic, erythematous wheals consistent with urticaria approximately 4 days after receiving a subcutaneous dose of yellow fever vaccine. The patient received the vaccine as part of pre-travel prophylaxis. There was no prior history of egg, gelatin, or latex allergy, and no known prior exposure to yellow fever vaccine. The urticarial eruption began on the right arm and spread to the left arm, bilateral inner thighs, and right flank area and was not associated with respiratory distress, angioedema, hypotension, or other systemic symptoms. Patient reports that the hives started 4 days after exposure, but the itching started immediately after injection at injection side. No fever, headache, or myalgia was reported at the time of reaction. The patient reports a similar reaction to penicillin. Patient has not taken anything for her symptoms.