1 Spatially structured superinfection and the evolution of disease virulence Thomas Caraco, Stephan Glavanakov, Department of Biological Sciences, University at Albany, Albany, New York 12222 Shengua Li, William Maniatty, Department of Computer Science, University at Albany, Albany, New York 12222 Boleslaw K. Szymanski Department of Computer Science, Rensselaer Polytechnic Institute, Troy, New York 12180 Address for manuscript correspondence: Thomas Caraco, Dept. Biological Sciences, University at Albany, Albany, NY 12222 USA e-mail: caraco@albany.edu phone: 518-442-4343 Theoretical Population Biology, vol. 69, no. 4, 2006, pp. 367-384