Cafodd yr Asiantaeth Iechyd Anifeiliaid a Phlanhigion ei chomisiynu i fodelu effeithiau posibl gwahanol drefniadau ar gyfer brechu moch daear ar TB gwartheg mewn moch daear a gwartheg, gan ddefnyddio terfynau a oedd yn benodol i’r Ardal Triniaeth Ddwys. Ystyriwyd lleoliadau ffermydd, maint buchesi a grwpiau cymdeithasol moch daear.
The Animal and Plant Health Agency (APHA) was commissioned to model simulations of the effect of different badger vaccination regimes on bovine TB in badgers and cattle, applying IAA-specific parameters. These took into account farm locations, herd size and badger social groups.