Lladdwyd 10,462 o wartheg oherwydd TB yn y 12 mis hyd at fis Awst 2020, sef gostyngiad o 18% o’u cymharu â'r 12 mis blaenorol. Mae'r gostyngiad hwn yn rhannol oherwydd newid y polisi ar wartheg sy’n cael adwaith amhendant sydd wedi arwain at ostwng y nifer a leddir cyn cynnal ail brawf. Ond, mae'n bwysig peidio â chanolbwyntio ar un mesur mewn sefyllfa gymhleth. Mae nifer yr achosion a nifer y buchesi sydd o dan gyfyngiadau yn ddangosyddion mwy arwyddocaol o hynt y clefyd na nifer yr anifeiliaid sy'n cael eu lladd.
There were 10,462 cattle slaughtered as a result of TB in the latest 12 months to August 2020 representing an 18% decrease compared to the previous 12 months. This decrease is partly due to the revised inconclusive reactor (IR) policy which has led to fewer IRs being removed prior to additional testing. However, it is important not to focus on one measure for what is a complex disease situation. Measures of incidence and prevalence at herd level are more significant indicators of disease progression than number of animals slaughtered.