On 6 December 2022, the Medicines and Healthcare products Regulatory Agency (MHRA) approved the Pfizer BioNTech COVID-19 vaccine for children aged six months to four years.
Ar 6 Rhagfyr 2022, cymeradwyodd yr Asiantaeth Rheoleiddio Meddyginiaethau a Chynhyrchion Gofal Iechyd (MHRA) y brechlyn COVID-19 Pfizer-BioNTech ar gyfer plant rhwng chwe mis a phedair blwydd oed.