Wrth ystyried gwerth profion, a phrofion ar gyfer pobl asymptomatig yn benodol, mae’n bwysig ystyried y niwed posibl. Rwyf wedi bod yn bryderus am lefel y profion PCR ar gyfer plant o dan 5 oed – mae’r nifer bum gwaith yn fwy nag yr oedd ddechrau mis Awst.
In considering the merits of testing, asymptomatic testing in particular, it is important to consider the potential harms.  I have been concerned at the level of PCR testing being undertaken of children under 5 years of age which has increased fivefold since the beginning of August.