Longitudinal study of Lyme borreliosis in a high risk population in Switzerland E. Zhioua, L. Gern, A. Aeschlimann, M.J. Sauvain, S. Van der Linden and H. Fahrer Parasite, 5 4 (1998) 383-386 Published online: 19 September 2014 DOI: 10.1051/parasite/1998054383