Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment he has made of the potential merits of funding UK-based studies of the (a) use of the Bacillus Calmette-Guérin vaccine to prevent bovine tuberculosis, (b) period of effectiveness of that vaccine and (c) benefits of that vaccine to the beef industry.

Developing a deployable cattle bovine TB vaccine is one of the government’s top priorities. Field trials have been taking place in England and Wales since 2021, following a major breakthrough by government scientists in the development of a new DIVA skin test to Detect Infected among Vaccinated Animals. The aim of these trials is to gather information to enable both the CattleBCG (Bacillus Calmette-Guérin) vaccine and the new DIVA skin test to be authorised for use and recognised internationally.

CattleBCG stimulates a protective immune response in vaccinated cattle. In the Animal and Plant Health Agency (APHA)’s experimental challenge model vaccinated animals display a range of protection and demonstrate a 12 month duration of immunity. The extent of disease reduction from CattleBCG depends on many factors including severity of exposure to bTB and herd immunity. Establishing the true level of protection afforded by vaccines is only possible by monitoring and assessing performance after licensing and routine use in the population vaccinated. When combined with existing disease control measures, we are confident that widespread vaccination will help to further reduce the incidence of bTB and its impact on cattle farms in England.

We continue to work in partnership with stakeholders, alongside colleagues in Scotland and Wales, to assess how this potential new tool could be deployed in the future and provide the greatest possible benefit to our herds for generations to come.

Information on the development of a bovine TB cattle vaccine can be found on the TB Hub at https://tbhub.co.uk/resources/frequently-asked-questions/development-of-a-deployable-tuberculosis-vaccine-for-cattle/.