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Real members of MyBCTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.
A MyBCTeam Member asked a question 💭
Cabot, AR
November 6, 2025
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A MyBCTeam Member

Hello Joyce. My Medical Oncologist had me wait until I finished Chemo before I could get the flu shot. Our immune systems are extremely compromised during chemo and it could be dangerous to introduce a virus to our bodies during this a time. I hope this helps! Ask your oncologist to be sure when it will be the right time for you. ❤️🥰

November 6, 2025
MyBCTeam

Is it safe to get the flu shot while receiving chemotherapy for breast cancer?

Generally, it's recommended to get vaccinated *before* starting chemotherapy rather than during treatment. Chemotherapy weakens your immune system, which can make immunizations less effective and potentially risky.

The best approach is to make Show Full Answer

Is it safe to get the flu shot while receiving chemotherapy for breast cancer?

Generally, it's recommended to get vaccinated *before* starting chemotherapy rather than during treatment. Chemotherapy weakens your immune system, which can make immunizations less effective and potentially risky.

The best approach is to make sure you're up-to-date on vaccinations, including the flu shot, before beginning chemo treatments. This gives your body the best chance to build immunity while your immune system is still stronger.

Talk to your doctor about:
- Getting a flu shot before starting chemotherapy
- The best timing if you're already in treatment
- Whether your current treatment schedule allows for safe vaccination

Your oncologist can help you determine the safest timing based on your specific treatment plan and immune system status. They may recommend getting vaccinated between treatment cycles when your immune system has had time to recover slightly.

Since chemotherapy puts you at higher risk for severe infections, protecting yourself from the flu is important - but timing and your doctor's guidance are key to doing it safely.

November 6, 2025
A MyBCTeam Member

Maybe. Check with your doctor.

November 7, 2025
A MyBCTeam Member

I was told to get a flu shot a couple of weeks before chemo or after chemo. Wishing you well. Hugs

November 7, 2025
A MyBCTeam Member

My oncologist told me to get flu or covid shots either a couple weeks before chemo or to wait until chemo was done. She also told me it is safe to get flu or covid shots if you are taking an AI or CDK inhibitor because they are not live viruses, but not to take any shots that contain a live virus while on either type of these meds. She said if you do need a shot with a live virus you will have you go off of AI or CDK inhibitor meds before you get the live virus shot you need.

November 6, 2025

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