On 16 May, health boards identified a potential discrepancy between the eligibility criteria determined by the JCVI and those presenting for vaccination.
Ar 16 Mai, sylwodd y byrddau iechyd ar anghysondeb posibl rhwng y meini prawf cymhwysedd a bennwyd gan JCVI a’r bobl a oedd yn dod i gael eu brechu.