title: Two Human Challenge Studies Confirm High Infectivity of Norwalk Virus.
authors.affiliation: Hubert Department of Global Health, Center for Global Safe Water, Emory University, Atlanta, Georgia 30322, USA.
authors.forename: Amy E
authors.initials: AE
authors.lastname: Kirby
authors.affiliation: Hubert Department of Global Health, Center for Global Safe Water, Emory University, Atlanta, Georgia 30322, USA Centre for Infectious Disease Control, RIVM, Bilthoven 3720BA, The Netherlands.
authors.forename: Peter F
authors.initials: PF
authors.lastname: Teunis
authors.affiliation: Hubert Department of Global Health, Center for Global Safe Water, Emory University, Atlanta, Georgia 30322, USA.
authors.forename: Christine L
authors.initials: CL
authors.lastname: Moe