Have had a prior anaphylactic reaction to any component (excipient) of the Covid vaccine and are not able to receive an alternative vaccine through the national allergy pathway and referral service.
wedi cael adwaith anaffylacsis blaenorol i unrhyw gydran (llenwydd) o’r brechlyn COVID ac nid ydynt yn gallu cael brechlyn arall drwy’r llwybr a’r gwasanaeth cyfeirio cenedlaethol ar gyfer alergedd.