Gaps found in evidence on vaccinating badgers against TB
Researchers in Wales highlight significant evidence gaps regarding badger vaccination against bovine TB and call for targeted evaluation.
Stock photo for illustration only, not from the actual event
- Researchers warn of major knowledge gaps in vaccinating badgers against bovine TB in Wales.
- Evidence shows BCG protects badgers, but impact on reducing cattle disease remains limited.
- Experts suggest combining genetic monitoring, camera traps and movement data to track coverage.
- The Welsh government reaffirms an evidence-based approach to eradicating bovine TB across Wales.
Significant gaps in knowledge and evidence regarding the impact of vaccinating badgers in Wales against bovine tuberculosis (TB) have been highlighted by researchers. A collaborative team consisting of the British Ecological Society's Wales policy group alongside staff from Cardiff and Aberystwyth universities argues that these gaps diminish the effectiveness of disease control methods.
While vaccination forms part of the ongoing programme to eradicate bovine TB in Wales, the topic remains highly controversial. Calls have emerged for alternative control methods, such as badger culling, due to their role as disease carriers that can transmit infections to cattle. Meanwhile, cattle undergo regular testing and are slaughtered if identified as carriers.
Stock photo for illustration only, not from the actual event
The demand for enhanced monitoring features in a recent policy briefing published by researchers. The briefing points out that major questions persist regarding vaccination numbers, the actual impact on cattle disease levels, and ways to build trust among farmers and veterinary professionals.
"Badger vaccination should not be presented as a stand-alone route to eradicating bovine tuberculosis."
McKeown emphasized that strong evidence supports BCG vaccination in protecting badgers, but proof of operational program benefits reducing disease in cattle remains constrained. Benefits for cattle depend on sustained, extensive coverage alongside effective cattle controls, requiring better targeted, measured, and evaluated vaccination strategies rather than sheer volume.
Context: Bovine tuberculosis remains a persistent and complex challenge for agricultural sectors across the UK. Balancing wildlife conservation with livestock protection requires delicate policy navigation, as measures like herd culling and movement restrictions deeply impact the livelihoods and mental well-being of farmers in high-risk regions like Wales.
A spokesperson for the Welsh government stated that officials are renewing their eradication strategy, focusing on cattle, people, and wildlife through evidence-based and science-led frameworks. Last month, agriculture minister Llyr Gruffydd noted the need to explore multiple solutions as the government extends pilot projects in high-incidence zones such as Pembrokeshire and parts of north Wales.
Source: BBC Science & Environment
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