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<p>Vaccination of cattle against the bovine TB bacterium is a part of our long-term
eradication strategy. There are merits to cattle vaccination as it has the potential
to reduce the prevalence, incidence and spread of TB. As with badgers, however, BCG
(<em>M. bovis </em>- bacille Calmette-Guérin) vaccination is not completely effective,
and has no impact on already infected cattle. It also sensitises cattle to the tuberculin
skin test used to identify animals infected with TB, so we need to licence an effective
test that differentiates between the disease and the vaccine before deployment would
be possible.</p>
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