nd the evolution of parasite virulence. Proc. R. Soc. B 255, 81-89. EFTA00749012 Bibliography 146 [107] Nowak, M.A., May, R.M., Phillips, R.E., Rowland-Jones, S., Lalloo, D.G., McAdam, S., Klenerman, P., Koppe, B., Sigmund, K., Bangham, C.R.M., McMichael, A.J., 1995. Antigenic oscillations and shifting i