BRUSSELS The European Commissioner-designate for health and animal welfare, Hungary 's Oliver Varhelyi , failed to sail through his vetting in Brussels on Nov. 6, and will have to provide further written details, according to parliamentary sources. Would-be members of the EU's new top executive team are undergoing public confirmation hearings at the European Parliament, which can test anything from the candidate's personal convictions to their knowledge of dense policy files. Varhelyi,