4-in-1 pre-school booster overview
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Children are offered the 4-in-1 pre-school vaccine to boost protection against 4 serious infections: diphtheria, tetanus, whooping cough and polio.
The 4-in-1 pre-school booster vaccine is given before your child starts school, when they’re 3 years 4 months old.
It's safe for your child to have the 4-in-1 pre-school booster at the same time as other vaccines, such as the MMR vaccine.
More than 99 in every 100 children who have the 4-in-1 pre-school booster vaccine are protected against diphtheria, tetanus, whooping cough and polio.
The 4-in-1 pre-school booster has been fully tested to make sure it’s safe. It cannot cause any of the conditions it protects against.
Your child may have some mild side effects after having the 4-in-1 pre-school booster, such as redness or tenderness where the injection was given.
Your child should not have the 4-in-1 pre-school booster if they have a high temperature or if they’re allergic to the vaccine.
If your child misses their 4-in-1 pre-school booster, you can make another appointment to have it at your GP surgery or local child health clinic.
Page last reviewed: 27/06/2019
Next review due: 27/06/2022