[1] Seattle Childrens Res Inst, Ctr Global Infect Dis, Seattle, WA USA
[2] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA
[3] Washington Natl Primate Res Ctr, Seattle, WA USA
[4] Emory Univ, Sch Med, Emory Vaccine Ctr, Atlanta, GA USA
[5] Emory Univ, Sch Med, Yerkes Natl Primate Res Ctr, Atlanta, GA USA
[6] Emory Univ, Sch Med, Dept Pediat, Atlanta, GA USA