What to expect after immunisation: Young people
This information tells you about the common side effects of immunisations that might occur in young people from 12 to 18 years of age.
This information is to be used as a guide only. You should always seek advice from your GP or Health Visitor if you're worried.
After immunisations given to young people
The most common side effects are at the site where the injection was given. These include:
- a small hard lump
These symptoms usually pass within a couple of days and you don’t need to do anything about them. If you're still not happy with your child's reaction to any immunisation, speak to your practice nurse or GP.
After the HPV vaccination
Mild side effects of the HPV immunisation can include:
- slightly raised temperature
- joint pain
After the Td/IPV vaccination
Mild side effects of the Td/IPV immunisation can include:
- feeling sick
- swollen glands
How to treat a fever in children
After the MMR vaccination
MMR is made up of 3 different vaccines (measles, mumps and rubella) which can cause reactions at different times after the injection.
Side effects after 6 to 10 days
After 6 to 10 days the measles vaccine starts to work and may cause a:
- measles-like rash
- loss of appetite
Side effects at 2 to 3 weeks
At around 2 to 3 weeks after the injection the mumps vaccine may cause mumps-like symptoms (fever and swollen glands).
Side effects at 12 to 14 days
Most commonly around 12 to 14 days after the injection, the rubella vaccine may cause a brief rash and possibly a slightly raised temperature. On rare occasions, a rash may also occur up to 6 weeks later.
Where can I report suspected side effects?
You can report suspected side effects of vaccines and medicines through the Yellow Card Scheme.
This can be done by:
- visiting the Yellow Card Scheme website
- phoning the free Yellow Card hotline on 0800 731 6789 (available Monday to Friday, 9am to 5pm)
Further information and other languages/formats
More information on vaccines for young people can be found in these leaflets, available in multiple languages and formats:
British Sign Language (BSL)
English (Easy Read)
English (Large Print)
Simplified Chinese (Mandarin)
24 April 2023
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