Flu Season and Biologics: What Patients with Multiple Sclerosis Should Know

As fall and winter arrive, flu season becomes an important concern, especially if you’re living with Multiple Sclerosis (MS) and receiving biologic therapy.

While these treatments help manage your MS, they can also impact how your immune system responds to infections, such as the flu.

The good news? With the proper steps, you can stay protected, keep your treatment on track, and move through the season with confidence.

What to Know

• Flu prevention is essential: MS and biologics may make you more vulnerable to complications.
• Vaccines are safe and recommended: Most MS patients on biologics can receive the flu shot, but live vaccines should generally be avoided.
• Treatment schedules matter: Coordinate with your neurologist to ensure your biologic therapy and flu prevention strategies align.
• Daily habits make a difference: Simple steps like handwashing, masking in crowded areas, and staying active can lower your infection risk.
• Consult your doctor: Ensure you speak to your doctor before getting the flu vaccine.

Why Flu Prevention Matters if You Have MS

If you have MS, your immune system is already at the center of your health.

Biologic therapies, while effective in slowing disease progression, can suppress or modify your immune response. That means your body might have a harder time fighting off infections like the flu.

Getting sick doesn’t just bring discomfort. For people with MS, the flu can trigger symptom flare-ups, increase fatigue, and, in some cases, cause serious complications.

Taking proactive measures during flu season is one of the most powerful ways to protect both your health and your MS management.

Vaccines and Biologics: What You Need to Know

Most MS patients on biologics are advised to get the inactivated annual flu vaccine.

This version is safe and effective, even if your immune system is somewhat suppressed. However, please note that the nasal spray vaccine (live attenuated) is generally not recommended for individuals who are taking biologics.

Timing can also matter. Some neurologists recommend scheduling your flu shot a few weeks before your next biologic infusion or injection to maximize your immune response. However, it is best to discuss the timing with your MS care team.

Steps to Reduce Infection Risks

Beyond the flu shot, there are everyday strategies you can use to lower your risk:

• Practice good hand hygiene: Wash your hands often, especially after being in public places.
• Mask up in high-risk settings: Crowded buses, clinics, or workplaces are common spots for flu spread, so, when possible, please consider wearing a mask.
• Prioritize sleep and nutrition: A well-rested and nourished body is better prepared to fight off illness.
• Stay active, but mindful: Light exercise boosts your immune health, but avoid overexertion during peak flu season.
• Avoid close contact with sick individuals: If a family member or co-worker has the flu, keep distance when possible and disinfect shared spaces.

Staying on Track with Your MS Treatment

Missing or delaying your biologic therapy may feel tempting if you’re worried about illness, but skipping treatment can increase the risk of MS flare-ups.

Instead, the best approach is to plan:

• Coordinate with your provider to ensure you can receive your treatments safely.
• Ask about telehealth visits if you’re feeling unwell but need to check in.
• Keep a symptom diary so you can quickly spot changes and share them with your healthcare team.

Remember: staying consistent with your biologic therapy and prevention measures together is the best way to protect both your immune health and MS progression.

Frequently Asked Questions (FAQ)

Q: Should I get the flu shot if I’m on biologic therapy for MS?

Yes. The inactivated flu shot is safe for most MS patients receiving biologics. However, remember to always confirm with your neurologist first.

Q: Can the flu shot trigger an MS relapse?

Research shows that the flu vaccine does not cause relapses. In fact, it helps prevent flu-related symptom flare-ups.

Q: What about the nasal spray flu vaccine?

The nasal spray contains a live virus and is not recommended for individuals on biologic therapy.

Q: How should I time my flu shot with my biologic treatment?

In some cases, doctors recommend getting vaccinated a few weeks before your biologic dose. Your provider will guide you on the best schedule for you.

Q: What should I do if I get the flu while on biologics?

Contact your healthcare team right away. They may prescribe antiviral medication and advise you on whether to temporarily adjust your treatment.

Moving Through Flu Season with Confidence

Living with MS and receiving biologics doesn’t mean you’re defenseless against the flu. By combining vaccination, smart prevention strategies, and consistent treatment, you can reduce your risks and focus on what matters most: living your life with strength and balance.

Disclaimer

The information provided on this blog regarding symptoms and potential treatments for illnesses is not intended to diagnose, treat, cure, or prevent any disease. Altus Biologics does not in any way guarantee or warrant the accuracy, completeness, or usefulness of the information published in its blog and will not be held responsible for the content of any blog publication.

You should always consult your primary care physician for specific medical advice.