The risk and control of Salmonella outbreaks in calf-raising operations: a mathematical modeling approach Cristina Lanzas, Lorin D. Warnick, Renata Ivanek, Patrick Ayscue, Daryl V. Nydam and Yrjo T. GröhnVet. Res., 39 6 (2008) 61DOI: https://doi.org/10.1051/vetres:2008038