title: Reply to Matthys.
authors.affiliation: Departments of Laboratory Medicine Microbiology Medicine, University of Washington, Seattle.
authors.forename: Ferric C
authors.initials: FC
authors.lastname: Fang
authors.affiliation: Departments of Laboratory Medicine.
authors.forename: April N
authors.initials: AN
authors.lastname: Abbott
authors.affiliation: Departments of Laboratory Medicine.
authors.forename: Tanis C
authors.initials: TC
authors.lastname: Dingle
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010612:Pharyngitis / Q000175:diagnosis*; D013290:Streptococcal Infections / Q000175:diagnosis*; D013297:Streptococcus pyogenes / Q000302:isolation & purification*