Have had a previous systemic anaphylaxis reaction to a Covid vaccine and are not able to receive an alternative vaccine through the national allergy pathway and referral service.
wedi cael adwaith anaffylacsis systemig blaenorol i’r brechlyn COVID ac nid ydynt yn gallu cael brechlyn arall drwy’r llwybr a’r gwasanaeth cyfeirio cenedlaethol ar gyfer alergedd.