Mae TAG hefyd yn cadarnhau mai'r mesurau ataliol mwyaf effeithiol yw rhai y mae ysgolion eisoes wedi'u rhoi ar waith, ond maent wedi gwneud argymhellion i gryfhau'r mesurau lliniaru presennol yng ngoleuni'r amrywiolion newydd.
TAG also confirms that the most effective preventative measures are ones schools have already put in place, but have made recommendations to strengthen existing mitigating measures in light of the new variants.