Pregnancy vaccine safety overview
Informed by recognized medical guidance
Overview
Pregnancy vaccine safety means that the vaccines recommended during pregnancy have been carefully studied and shown to be safe for both the pregnant person and their developing baby. These vaccines help protect against serious infections that can harm the mother or the newborn.
Key facts
- Vaccines like the flu shot and the whooping cough (pertussis) vaccine are routinely recommended during pregnancy and have a strong safety record.
- The COVID-19 vaccines are also considered safe in pregnancy, reducing the risk of severe illness for both mother and baby.
- Vaccines given during pregnancy pass protective antibodies to the baby, which can guard against diseases in the first few months of life.
Yes, many pregnant people receive recommended vaccines each year. Health authorities worldwide, including the NHS, advise vaccination during pregnancy to prevent serious complications.
Pregnancy vaccine safety directly affects individuals who are pregnant or planning to become pregnant. Their babies also benefit indirectly from antibodies passed through the placenta or breast milk.
Symptoms
- Difficulty breathing or wheezing
- Swelling of the face, lips, tongue, or throat
- Rapid heartbeat or dizziness
- Universal sign of anaphylaxis (severe allergic reaction): hives all over the body with trouble breathing
- ⚠High fever (over 39°C / 102.2°F) that does not come down with usual measures
- ⚠Severe headache or unusual vomiting
- ⚠Any symptoms that concern you and do not improve
Common symptoms
- Soreness, redness, or swelling at the injection site
- Mild fatigue or tiredness
- Low-grade fever or feeling achy
Symptoms in children
- When babies receive their own vaccines, typical mild reactions include fussiness, sleepiness, or a slight fever for a day or two.
Symptoms in older adults
- Older adults may have similar mild side effects after vaccines, such as muscle aches or headache, but serious reactions are very rare.
Causes
Main causes
- Vaccines work by training your immune system to recognize and fight specific infections. During pregnancy, the immune system changes slightly, but the same safety principles apply.
- Pregnant people are more vulnerable to some infections (like flu and whooping cough), which is why vaccines are offered to protect them and their baby.
Risk factors
- Not being vaccinated during pregnancy can lead to serious illness from preventable infections, which may increase the risk of premature birth or low birth weight.
- Living in an area with low vaccination rates may raise the chance of coming into contact with vaccine-preventable diseases.
When to see a doctor
See a doctor urgently if:
- If you experience signs of a severe allergic reaction shortly after vaccination (as described above), seek emergency care immediately.
- If you have a high fever or feel very unwell after vaccination, contact a healthcare provider promptly.
Book a routine appointment if:
- Speak with your midwife or GP about which vaccines are recommended during your pregnancy and when to get them.
- If you have specific health conditions or concerns about vaccines, discuss them at your prenatal appointments.
Diagnosis
There is no diagnosis for vaccine safety itself. Instead, healthcare providers assess whether you are up to date with recommended vaccines based on your pregnancy stage, medical history, and local guidelines.
Tests that may be done
- No specific tests are needed for vaccine safety. Your provider may check your vaccine record or test for immunity to certain diseases (like rubella) before pregnancy.
What to expect at your appointment
Your midwife or doctor will explain which vaccines are advised (often flu and whooping cough) and when to get them. You can ask about any concerns you have about side effects or ingredients. After vaccination, you may be asked to wait 15–20 minutes for observation.
Treatment
Vaccination is itself a preventive treatment. The focus is on receiving the right vaccines at the right time to build immunity and protect both mother and baby. If a vaccine-preventable disease occurs, treatment may involve antiviral or antibiotic medicines, but vaccines are the safest way to avoid this.
Self-care at home
- After vaccination, drink plenty of fluids and rest if you feel tired.
- Apply a cool, damp cloth to the injection site if it feels sore.
- Use paracetamol (acetaminophen) if needed for fever or discomfort – always follow the dose on the label and check with your pharmacist or midwife if you are pregnant.
Medical treatments
If a severe allergic reaction occurs, it is treated with adrenaline (epinephrine) and emergency medical care. For other reactions, simple support and monitoring are usually enough. No specific medications are routinely needed for vaccine side effects.
When is surgery considered?
This topic does not involve surgery.
Living with this condition
After vaccination, you can continue your usual activities. The protection from vaccines helps you stay healthy during pregnancy, so you can focus on your daily life and preparing for your baby.
Lifestyle tips
- Stay up to date with your prenatal appointments to discuss any new vaccines or health concerns.
- Eat a balanced diet, stay active, and get enough rest to support your immune system.
- Wash your hands often to reduce infection risk, even though you are vaccinated.
Diet and exercise
No special diet is needed related to vaccines. Eating well and exercising moderately (as approved by your provider) support overall pregnancy health and can help your immune system work well.
Mental health and emotional wellbeing
Some people feel anxious about vaccine safety. It is normal to have questions. Talking to your healthcare provider and relying on trusted sources like the NHS can ease worries. If you feel very stressed or anxious, reach out to a mental health professional or call a crisis helpline. You are not alone.
Prevention
Yes. The main goal of vaccination is prevention. By getting recommended vaccines during pregnancy, you can prevent serious illnesses like influenza, whooping cough, and COVID-19 in yourself and your newborn.
Vaccines
The vaccines most often recommended in pregnancy are the flu vaccine (influenza) and the whooping cough vaccine (pertussis). Depending on your health, other vaccines like the COVID-19 vaccine may also be advised. All are considered safe based on extensive research.
Screening programmes
Your healthcare provider may check your vaccination history and offer catch-up vaccines if needed before or during pregnancy. This is a form of screening to ensure you are protected.
Complications
If left untreated
- If you do not get vaccinated and contract a preventable disease, you could become seriously ill – for example, severe flu may lead to pneumonia.
- Some infections during pregnancy can harm the baby, causing premature birth, low birth weight, or even stillbirth.
- Whooping cough in a newborn can be life-threatening, but vaccination during pregnancy can pass antibodies to protect the baby before they are old enough to be vaccinated themselves.
Long-term outlook
The outlook is very positive. Vaccines have been used for decades and are one of the safest ways to protect health during pregnancy. Most people have no serious side effects, and the benefits far outweigh the tiny risks. If you have any fears, discuss them with your healthcare team – they are there to help you make an informed choice.
Find support
International organisations
Local organisations
- NHS (UK) ↗ · United Kingdom
Helplines
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 27, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.