Flu Shot and Kenalog Administration Guidelines

Route-Specific Considerations

Inactivated influenza vaccines (IIV4) and recombinant influenza vaccines (RIV4) can be administered simultaneously with Kenalog injections without any known interactions, according to the Centers for Disease Control and Prevention (CDC) 1, 2
These vaccines should be given at separate anatomic sites when both are injectable, as recommended by the CDC 1, 2
No evidence suggests that systemic or local corticosteroids interfere with the immune response to inactivated influenza vaccines, as stated by the CDC 3, 4, 5

Inactivated vaccines do not interfere with the immune response to other inactivated vaccines or medications, according to the CDC 3, 4, 5
Multiple inactivated vaccines can be administered simultaneously at different anatomic sites without increasing side effects, as recommended by the CDC 3, 4, 5

Systemic corticosteroids like Kenalog (triamcinolone acetonide) are not listed as contraindications or precautions for influenza vaccination in any ACIP guidelines, according to the CDC 6, 1, 7
The only immunosuppression concerns for LAIV relate to severely immunocompromised states, not routine corticosteroid injections, as stated by the CDC 7

For Injectable Flu Vaccine + Injectable Kenalog: administer both vaccines/medications at separate anatomic sites, as recommended by the CDC 1, 2
For Intranasal LAIV + Kenalog: if Kenalog is injectable, proceed with both, no interaction expected, according to the CDC 6

Do not delay influenza vaccination unnecessarily, as the lack of data on intranasal corticosteroid interaction with LAIV does not mean there is a proven problem, according to the CDC 6, 1
Do not mix vaccines in the same syringe, always use separate injection sites, as recommended by the CDC 2, 8
Do not assume all corticosteroids are contraindications, only severe immunosuppression contraindicates LAIV, not routine corticosteroid injections, according to the CDC 7