In July 2020, 15% of people said they think they have had COVID-19 (coronavirus) at some point, a similar level to June 2020.
Ym mis Gorffennaf 2020, dywedodd 15% 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 2020.