Is Chickenpox Dangerous in Pregnancy If You’ve Already Had It?
UPDATED ON 1ST JAN. 2025
When you think of chickenpox, you might picture those itchy red spots and a week spent at home feeling miserable. But if you’re pregnant, especially if you’ve already had chickenpox, you may wonder, “Is this something I need to worry about?” Let’s break this down step by step, using simple analogies and examples.

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Dr Jay Mehta
Scientific Director & IVF Specialist with 10+ years of experience
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What is Chickenpox?
Chickenpox is a disease caused by a virus called the varicella-zoster virus. Think of it like a mischievous kid who likes to cause trouble in your body. Once it gets in, it throws a “party” that results in itchy spots, fever, and tiredness.
Most people get chickenpox as kids, and once you recover, your body remembers how to fight this virus if it shows up again. This is called immunity, like a superhero who has already defeated a villain once and knows all their tricks.
What Happens After You’ve Had Chickenpox?
If you’ve had chickenpox before, your body has built an immune shield. This shield is made of special defenders called antibodies that recognize the chickenpox virus and stop it before it can cause trouble again.
Think of it like a guard dog trained to chase away a burglar—it recognizes the threat and reacts immediately.
What About Pregnancy?
Pregnancy is a time when your body works extra hard to protect and grow the baby inside you. It’s like a construction site where your body is both the architect and the builder.
Your immune system (the defenders in your body) becomes a little less aggressive during pregnancy. This is so it doesn’t accidentally attack the baby, which your body might see as “foreign.”
Is Chickenpox Dangerous in Pregnancy?
Chickenpox can be dangerous during pregnancy if:
- You’ve never had chickenpox.
- You’ve never been vaccinated for chickenpox.
But here’s the good news: If you’ve already had chickenpox, your immune shield is strong, and it protects both you and your baby.
Let’s say you’re driving in a car with seatbelts (your immunity). Even if there’s a small bump in the road (exposure to chickenpox), you and your baby are safe because the seatbelt (immunity) keeps you secure.
What About the Baby?
If a pregnant woman who’s never had chickenpox gets infected, the baby might be at risk for a rare condition called congenital varicella syndrome. This can cause:
- Skin scars.
- Problems with the baby’s eyes, brain, or limbs.
But again, if you’ve already had chickenpox, your baby is safe because your immunity acts like an umbrella, shielding the baby from the virus.
Can Chickenpox Reactivate During Pregnancy?
Sometimes, the chickenpox virus hides in your body after you’ve recovered. It’s like a sneaky villain hiding in a cave. Later in life, it might come out again as a different disease called shingles.
Shingles is usually not dangerous for your baby because your body still has that strong immune shield. It’s more of an inconvenience for you, like dealing with a flat tire.
What Should You Do If You’re Exposed to Chickenpox During Pregnancy?
Even if you’ve had chickenpox before, it’s good to be cautious. Here’s what you should do:
- Stay calm. Your immune system knows how to fight this virus.
- Inform your doctor. They might suggest a blood test to check your immunity levels, just to be sure.
Avoid contact with anyone who currently has chickenpox or shingles, especially during the first 20 weeks of pregnancy.

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What If You’re Not Sure You’ve Had Chickenpox?
If you’re unsure, your doctor can do a simple blood test to check for immunity. Think of this like checking your pantry to see if you have enough supplies before a storm.
If you’re not immune, your doctor might give you a special medicine called varicella-zoster immune globulin (VZIG). This works like borrowing an umbrella from a friend when it suddenly starts raining.
How to Stay Safe?
- Vaccination Before Pregnancy: If you’re planning to get pregnant and haven’t had chickenpox, get vaccinated at least 3 months before conceiving.
- Good Hygiene: Wash your hands often and avoid close contact with sick people.
- Regular Check-Ups: Keep in touch with your doctor for any concerns.
Conclusion
If you’ve already had chickenpox, your body has a strong defense system that protects both you and your baby. While it’s natural to worry, you can rest assured that your immune shield is doing its job.
Pregnancy is like growing a precious garden, and your body is the diligent gardener, ensuring everything stays safe and healthy. By staying informed and in touch with your doctor, you can enjoy this beautiful journey with peace of mind.
Remember: Every pregnancy is unique, so if you have questions or concerns, don’t hesitate to reach out to your healthcare provider. They are there to guide you every step of the way!
AUTHOR
Dr Jay Mehta
Scientific Director & IVF Specialist with 10+ years of experience
CONDITION
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