Brechlynnau yw'r amddiffyniad gorau yn erbyn y feirws o hyd – mae bron i 400,000 o bobl wedi cael eu pigiad atgyfnerthu ar gyfer yr hydref ers i’r rhaglen gael ei lansio, ac mae dros 40% o bobl ifanc 12 i 15 oed wedi cael eu brechu.
Vaccines remain the best defence against the virus – almost 400,000 people have had their autumn booster since the programme was launched and more than 40% of 12 to 15-year-olds have had their vaccine.