Excel-File the graph is created with
In Scotland the prevalence of “Bovine TB” never went over 1%. In Ireland it did decrease from 8,1% in 2000 to 3.3 percent in 2016. In Wales it did increase from under 1% in 2000 to 5.5%, there was a peak at 7.2% in 2012. In England there is an increase of the prevalence from 1% in 2000 to 6.3% in 2017. No significant effect at all of control of prevalence of “Bovine TB” in England can be seen since 1996. Just in Ireland a sustainable decrease over 18 years can be seen. The country did decrease the prevalence of Bovine TB more than 50%.
TB in cattle in Great Britain – GB by country dataset