Like most medicines, vaccines can sometimes cause reactions. These are usually mild, and not everyone will get them.
Mild reactions are normal and show that your baby’s immune system is responding to the vaccine.
If your pēpi is going to have any reactions, they normally happen in the first few days after getting vaccinated. The vaccine itself is gone from your baby’s body within a few hours or days.
The most common reaction to the rotavirus vaccine is a slight fever.
Other common reactions to the rotavirus vaccine include:
- not feeding as usual
- crying, being upset, and hard to settle
- runny poos within 7 days (mild diarrhoea)
- vomiting within 7 days
- tummy pain.
An extremely rare side effect of the vaccine is called intussusception. This causes a blockage of the intestine.
Contact your doctor or healthcare professional immediately if your baby experiences any of these symptoms after immunisation:
- severe stomach pain
- persistent vomiting
- blood in poos (stools)
- a swollen belly
- high fever (39°C and over).
Serious allergic reactions are extremely rare. Only about 1 in a million people will experience this.
Your vaccinator is well-trained and knows what to look for and can treat an allergic reaction quickly if it happens.
Serious allergic reactions normally happen within the first few minutes of vaccination. This is why you need to wait for up to 20 minutes after immunisation.
Call 111 if you are worried your baby is having a serious allergic reaction.
Find more information about common side effects, what to look for and how to report side effects.
Vaccine side effects, reactions and safety