Mark S Freedman1, Henry Bernstein2, Kevin A Ault3. 1. Centers for Disease Control and Prevention, Atlanta, Georgia (M.S.F.). 2. Cohen Children's Medical Center, New Hyde Park, and Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York (H.B.). 3. and University of Kansas Medical Center, Kansas City, Kansas (K.A.A.).