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For the first time, Britain has identified a cow with BSE born after 1 August
1996, when stringent controls were meant to exclude cattle feed contaminated
with mammalian material. Investigations are under way to find out whether the
new case was caused by feed that eluded the controls, or some other route of
infection. One possibility is that the infected cow caught the disease from its
mother, which may have had BSE but was slaughtered shortly after the birth of
its daughter.