Yoshinori Nakazawa , Ginny L. Emerson, Darin S. Carroll, Hui Zhao, Yu Li, Mary G. Reynolds, Kevin L. Karem, Victoria A. Olson, R. Ryan Lash, Whitni B. Davidson, Scott K. Smith, Rebecca S. Levine, Russell L. Regnery, Scott A. Sammons, Michael A. Frace, Elmangory M. Mutasim, Mubarak E. M. Karsani, Mohammed O. Muntasir, Alimagboul A. Babiker, Langova Opoka, Vipul Chowdhary, and Inger K. Damon

Author affiliations: Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (Y. Nakazawa, G. L. Emerson, D.S. Carroll, H. Zhao, Y. Li, M.G. Reynolds, K. L. Karem, V. A. Olson, R. R. Lash, W. B. Davidson, S. K. Smith, R. S. Levine, R. L. Regnery, S. A. Sammons, M.A. Frace, I.K. Damon); National Public Health Laboratory, Khartoum, Sudan (E.M. Mutasim, M.E.M. Karsani); Federal Ministry of Health, Khartoum (M.O. Muntasir, A.A. Babiker); World Health Organization Regional Office for the Eastern Mediterranean, Cairo, Egypt (M.L. Opoka); Médecins Sans Frontières, Khartoum (V. Chowdhary)