Hefyd, pam na ddysgwyd gwersi o'r don gyntaf o COVID i'r ail, gan arwain at broblemau trychinebus gyda storio a dosbarthu brechlynnau i gartrefi gofal?
Also, why were lessons not learned from the first wave of COVID into the second, leading to catastrophic issues with the storage and distribution of vaccines to care homes?
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