Maggie Li; Evan J Beck; Oliver Laeyendecker; Yolanda J Eby; Aaron AR Tobian; Patrizio Caturegli; Camille Wouters; Greg Chiklis; William Block; Robert McKie; Michael Joyner; Timothy D Wiltshire; Allan B Dietz; Thomas J Gniadek; Arell Shapiro; Anusha Yarava; Karen Lane; Daniel F Hanley; Evan M M Bloch; Shmuel Shoham; Edward Cachay; Barry R Meisenberg; Moises Huaman; Yuriko Fukuta; Bela Patel; Sonya L Heath; Adam C. Levine; James H Paxton; Anjan Shweta; Jonathan Gerber; Kelly A Gebo; Arturo Casadevall; Andrew Pekosz; David J Sullivan; - COVID-19 Serologic Studies Consortium (CSSC).