@article {dhdsf69, title = {The Response of Man to Virulent Shigella flexneri 2a}, journal = {Journal of Infectious Diseases}, volume = {119}, year = {1969}, pages = {3}, author = {DuPont, H. L. and Hornick, R. B. and Dawkins, A. T. and Snyder, M. J. and Formal, S. B.} }