Flu Vaccine Pregnancy: What Every Expecting Mom Should Know

Getting the flu during pregnancy can be risky for both you and your baby. The good news? The flu vaccine is safe, easy to get, and helps keep you both healthy. Below we break down the key facts you need right now.

Why the Flu Shot Matters When You’re Pregnant

Pregnancy changes your immune system, making it harder to fight off infections. If you catch the flu, you’re more likely to end up in the hospital, and the virus can cause complications like premature birth. The flu vaccine lowers these risks by training your body to recognize the virus without actually getting sick.

Another big plus: the antibodies you build after the shot travel to your baby through the placenta. That means your newborn gets extra protection for the first few months of life, when they can’t get the vaccine themselves.

When and How to Get the Shot

The flu season usually starts in October and runs through May. The CDC recommends that pregnant women get the vaccine as soon as it’s available, no matter which trimester you’re in. Getting it early means you’re covered for the whole season.

Both the standard flu shot (inactivated) and the newer high‑dose version are safe. The nasal spray (live‑attenuated) is NOT recommended for pregnant women, so stick with the injection.

Here’s a quick checklist:

• Ask your OB‑GYN or family doctor for the flu shot at your next prenatal visit.
• Make sure the vaccine is the inactivated (flu shot) type, not the nasal spray.
• Bring your immunization record so the clinic can note the date.
• Stay hydrated and eat a light snack before the injection to reduce soreness.

If you’ve never had a flu shot, you might wonder about side effects. Most people feel a mild sore arm or low‑grade fever for a day or two—nothing that interferes with daily life. Serious reactions are extremely rare.

For moms who are worried about safety, dozens of studies involving hundreds of thousands of pregnant women show no increase in birth defects or pregnancy loss. The vaccine’s benefits far outweigh the tiny risk of mild discomfort.

Common Questions About Flu Vaccine and Pregnancy

Can I get the flu shot if I’m already pregnant? Yes. It’s safe at any stage of pregnancy.

Will the vaccine cause the flu? No. The flu shot contains dead virus particles, so you can’t catch the flu from it.

Do I need a flu shot every year? Absolutely. Flu viruses change each season, and the vaccine is updated to match the most common strains.

What if I’m allergic to eggs? Most flu shots are now made without egg proteins, but let your doctor know about any severe allergies.

Can I still get the flu after the shot? You can, but the vaccine usually makes the illness milder and shortens recovery time.

Bottom line: a flu vaccine during pregnancy is a simple, proven way to protect yourself and your baby. Talk to your health provider today and schedule the shot—your future self will thank you.