13% of people say they think they have had COVID-19 (coronavirus) at some point, a similar level to June, July and August 2020.
Dywedodd 13% o bobl eu bod yn credu eu bod wedi cael COVID-19 (y coronafeirws) ar ryw adeg, lefel debyg i’r hyn ydoedd ym mis Mehefin, Gorffennaf ac Awst 2020.