The research was carried out at Bristol University.
A study suggests children who are considered vulnerable to Covid-19 only suffer "mild" side-effects from the Pfizer vaccine.
Researchers in Bristol found adverse reactions were mostly moderate in those aged between 12 and 15.
Symptoms included a mild rash, headache and diarrhoea - all of which went away within 72 hours.
The report looked at children who suffer severe neurodisabilities.
The study was carried out in Bristol https://t.co/8qHSH8z8Jn
— Bristol Live (@BristolLive) August 27, 2021
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