Yn hollol briodol, addawyd i’r rhai oedd yn cymryd rhan na fyddent o dan anfantais o gymryd rhan mewn treialon ar gyfer brechlyn COVID-19 a oedd wedi’u cymeradwyo yn y DU. Serch hynny, rwy’n gwybod bod rhai ohonynt wedi cael anhawster i gael brechiad atgyfnerthu neu Bàs Teithio Rhyngwladol COVID. Y rheswm am hyn yw nad oedd pob un a gymerodd ran yn y treialon wedi cael brechlyn sydd wedi’i  gymeradwyo gan yr Awdurdod Rheoleiddio Meddyginiaethau a Gofal Iechyd (MHRA).
Trial participants were rightly promised they would not be disadvantaged for taking part in approved COVID-19 vaccine trials in the UK. However, I know some trial participants have had difficulty accessing a booster vaccination or COVID international Travel Pass. This is because not all trial participants received a vaccine approved by the Medicines and Healthcare Regulatory Authority (MHRA).