Social group size affects Mycobacterium bovis infection in European badgers (Meles meles)

Rosie Woodroffe, Christl A. Donnelly, Gao Wei, D. R. Cox, F. John Bourne, Terry Burke, Roger K. Butlin, C. L. Cheeseman, George Gettinby, Peter Gilks, Simon Hedges, Helen E. Jenkins, W. Thomas Johnston, John P. McInerney, W. Ivan Morrison, Lisa C. Pope