Fever After Vaccination in Babies

Fever in babies

It is only natural for parents to get worried if their child is not feeling well. You will be ready to do anything to ease the pain of your baby. You must have noticed a slight fever in your child after she gets her vaccination. However, fever after vaccination in babies is a common occurrence. Now as a parent you must be in a dilemma that whether or not you should give her an anti-fever or antipyretic medicine? Let’s find out how exactly the fever after vaccination impacts your child’s body.

Is Post-vaccination Fever Normal in Babies?

Fever after vaccination is normal for some babies, and in fact, a good sign for your child’s health. It means that your child’s immune system is responding against the vaccination introduced to her body. Hence, you should not be worried if she is down with a mild fever.

What Causes Fever After Vaccination in Infants?

Vaccination is the process of preventing the diseases from infecting our body, by strengthening the immune system and preparing it to fight against a potential threat. A vaccine is an antigenic created either from the causing agent of the disease or is synthetically created to provide immunity to fight against one or more diseases.

By introducing a vaccine, the defence mechanism of the body is trained to remove harmful bacteria or viruses from the body. A number of vaccines such as DTaP, MMR, and PCV, are given to an infant to protect her against several nasty diseases. After vaccination, your child’s body might heat up a little due to the response from immune system against a few vaccines. It is purely a defence mechanism of the body to get rid of an infection which is commonly labelled as fever. Hence, some vaccination cause fever after vaccination in some infants.

How Do You Know if Your Baby has a High Temperature Post Immunisation?

Usually, a temperature over 37.5°C is regarded as fever in children and it shouldn’t be ignored. You should seek an advice from your family doctor or a practice nurse if your child is:

  1. Under 3 months of age and has a body temperature of 38°Celsius (101°Fahrenheit) or higher than that.
  2. Having a body temperature of 38°Celsius (102° Fahrenheit) or higher and is under 3 to 6 months of age.
  3. Showing signs of floppiness and drowsiness along with fever.
    Fever in babies

Tips to Help Your Baby

Even though a fever after vaccination in some children is normal, however, you, as a parent, would go to a great length to make them feel more comfortable and relaxed. Below are few tips to educate you on how to treat fever after vaccination.

  • Be there for her.
    Even though not necessary but parent’s comfort is the best for infants. Just by being there for your child will comfort her and she will be able to relax. So, plan your schedule in a way that you can spare at least 3 to 4 hours with your child after vaccination.
  • Clad the baby in light clothes.
     Remove the excess layer of clothes. Make your child wear light and comfortable clothes. Also, ensure to use a lightweight sheet to cover her, if need be.
  • Give her plenty of fluids.
    Fever dehydrates the body, so make sure that you feed her plenty of fluids to keep her hydrated. You may seek your doctor’s opinion on what fluids you may give her if need be.

    A mother feeding her baby
  • The room should be airy.
    Try to keep the room well ventilated and the temperature should be comfortable for the baby. For infants, in such case, 18° Celsius (65° Fahrenheit) is the ideal temperature. Keep the windows open for proper ventilation, or you can even adjust radiators to maintain a comfy temperature.
  • Get a paracetamol.
    You can give your little one a paracetamol or ibuprofen if she is distressed or uncomfortable. Paracetamol is suitable for infants who are less than 2months old (under 4kg), and who are not premature. Ibuprofen is suitable for infants above 3 months old (above 5kg).

When Do You Need to Worry

Usually, a post-immunisation fever should bid adieu within 24 hours. However, it is a cause of worry if  you notice the below signs:

  • Extreme fatigue in your child.
  • Pain in her stomach, limbs, and ears.
  • Difficulty while swallowing fluids.
  • High fever accompanied by vomiting or diarrhoea.
  • If the fever after shots persists beyond 3 days and keeps getting worse.

Unless in a rare or exceptional situation, a post-immunization fever will subdue on its own without causing any harm to your baby. However, it’s always better to follow your instinct, so don’t hesitate or delay to contact your doctor if you feel something odd.

Also Read: 

Side-effects of Vaccination in Infants

Painless Vaccination for Babies