AFAIK it's partly true? EU figures for Romania are something like 50% vaccinated (unclear if this is just one dose) a fall in demand and alack of interest from rural communities some centres are closing or reducing opening hours because of demand most of the balkans has really low takeup and high infections more here https://www.euronews.com/2021/06/08/why-did-romania-s-vaccination-campaign-derail-after-a-successful-start