Does Cosentyx (secukinumab) blunt the flu vaccine’s effectiveness?
Cosentyx (secukinumab) is an immune-modulating biologic that targets interleukin-17A. Because it changes immune signaling, people often worry it could make vaccines work less well.
Based on available clinical practice guidance, inactivated flu vaccines are still recommended for most patients taking biologics, including Cosentyx, and they are expected to provide protection. The vaccines are not considered “live,” which matters because live vaccines are where immunosuppression creates more concern.
What kind of flu shot matters: inactivated vs live nasal spray
Most flu shots given in clinics are inactivated and safe for people on biologic therapies. However, the live attenuated flu vaccine is given as a nasal spray, and live vaccines are generally avoided in patients with immune-modifying drugs.
So the practical answer depends on which flu shot you get:
- Inactivated flu shot: generally recommended and not contraindicated with Cosentyx.
- Live nasal spray flu vaccine: typically avoided with immune-modifying treatments like Cosentyx.
Will you still get fewer antibodies or shorter protection?
Some immune-modifying therapies can lead to lower antibody responses after vaccination compared with people not on those drugs. That does not mean the flu shot stops working. It usually means protection may be somewhat less robust, and staying up to date with yearly vaccination and other prevention measures becomes more important.
If you’re deciding between flu vaccine options, your clinician can help choose the formulation best suited to your health status and local availability.
How to time the flu shot with Cosentyx dosing
For most patients, the usual approach is to get the flu shot in the regular seasonal window without stopping Cosentyx. Stopping or delaying Cosentyx can risk loss of control of the underlying condition (such as psoriasis or psoriatic arthritis) and is generally not recommended just for vaccination.
When to ask your doctor urgently
Ask your clinician before vaccination if you have:
- A history of severe vaccine reactions
- Planned treatment changes soon (starting or switching biologics)
- A need for a live vaccine for another reason (travel, special circumstances)
Sources
The information above is general vaccine guidance for immune-modifying biologics, but I don’t have Cosentyx-specific flu-shot effectiveness data in the provided material. If you want, tell me which flu shot you’re planning (standard shot vs nasal spray) and your condition (psoriasis, psoriatic arthritis, ankylosing spondylitis, etc.), and I can narrow the guidance to that scenario.