1. From the Department of Pediatrics (P.K., J.S.B., C.-H.H., H.S.H., J.G.V.), Section of Infectious Diseases, and the Winters Center for Heart Failure Research (P.K., Y.S., S.-H.H., K.S., J.G.V.), Baylor College of Medicine and Texas Children’s Hospital, Houston, Tex, and the Department of Host Defense (O.T., S.A.), Osaka University, Osaka, Japan.