Atal y feirws rhag lledaenu yw prif nod yr holl fesurau rheoli ac mae’r profiadau hyd yma yn awgrymu bod y mesurau atal wedi’u deall a’u gweithredu’n eang ar draws ein hysgolion a’n colegau.
Prevention should be the primary aim of all control measures and experience to date suggests that prevention measures have been well understood and widely implemented across our schools and colleges.