[1] CDC, Natl Ctr Immunizat & Resp Dis, Div Bacterial Dis, Atlanta, GA 30333 USA
[2] Natl Ctr Immunizat & Resp Dis, Coronavirus & Other Resp Viruses Div, CDC, Atlanta, GA USA
[3] CDC, Detect & Monitor Div, Off Publ Hlth Data Surveillance & Technol, Atlanta, GA USA
[4] Maximus Fed Serv Inc, Mclean, VA USA
[5] ICF, Atlanta, GA USA
[6] Childrens Mercy Hosp, Kansas City, MO USA
[7] Univ Rochester, Sch Med & Dent, Dept Pediat, Rochester, NY USA
[8] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH USA
[9] Texas Childrens Hosp, Houston, TX USA
[10] Baylor Coll Med, Houston, TX USA
[11] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[12] Seattle Childrens Res Inst, Seattle, WA USA
[13] Univ Pittsburgh, Med Ctr, Childrens Hosp Pittsburgh, Pittsburgh, PA USA