Affiliation: | Centers for Disease Control and Prevention, Atlanta, Georgia, USA (D.M. Blau, J. Bhatnagar, D. Rollin, S.N. Hocevar, M. Kuehnert, S.R. Zaki); ;Centers for Disease Control and Prevention, Fort Collins, Colorado, USA (I.B. Rabe, J.E. Staples, M. Fischer); ;Los Angeles County Department of Public Health, Los Angeles, California, USA (R. Civen); ;California Department of Public Health, Richmond, California, USA (K. Trivedi) |