Bovine tuberculosis trends in Wales between 2010 and 2021

Background Bovine tuberculosis (bTB) is the most important animal health concern in Wales. Annual testing across all cattle herds in Wales commenced in 2010. In 2017, a new geographic division of Wales was conceived, with bespoke cattle controls and eradication milestones reflecting the geographical heterogeneity of bTB distribution. Methods This observational study uses descriptive analysis and Poisson regression modelling to analyse bTB surveillance data from all herds in Wales. Results Since 2010, there has been a significant decrease (p Limitations This study includes data from Wales only. Conclusions Improvements in trends of bTB occurred from 2010 to 2021, but the spatial variations described in this paper support the continued need for regionally adapted surveillance and control measures.