Severe allergic rxn e g anaphylaxis to any prior flu vaccine If giving ccIIV3 or RIV3 and prior rxn was to any other flu vaccine formulation then considered a precaution

Severe allergic rxn (e.g., anaphylaxis) to any prior flu vaccine. If giving ccIIV3 or RIV3, and prior rxn was to any other flu vaccine formulation, then considered a precaution.