title: Reply to Kirby et al.
authors.affiliation: Departments of Medicine Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Atmar
authors.affiliation: Departments of Medicine.
authors.forename: Antone R
authors.initials: AR
authors.lastname: Opekun
authors.affiliation: Departments of Medicine Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas.
authors.forename: Mary K
authors.initials: MK
authors.lastname: Estes
authors.affiliation: Departments of Medicine Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas.
authors.forename: David Y
authors.initials: DY
authors.lastname: Graham
mesh_terms: D017250:Caliciviridae Infections / Q000821:virology*; D005260:Female; D005759:Gastroenteritis / Q000821:virology*; D006801:Humans; D008297:Male; D009663:Norwalk virus / Q000472:pathogenicity*