title: Reply to Korch.
authors.affiliation: Division of Infectious Diseases, Massachusetts General Hospital, Cambridge.
authors.forename: David C
authors.initials: DC
authors.lastname: Hooper
authors.affiliation: Division of Infectious Diseases, Massachusetts General Hospital, Cambridge.
authors.forename: Martin S
authors.initials: MS
authors.lastname: Hirsch
mesh_terms: D000818:Animals; D001905:Botulinum Toxins / Q000096:biosynthesis* / Q000235:genetics*; D001906:Botulism / Q000382:microbiology*; D003014:Clostridium botulinum / Q000235:genetics* / Q000378:metabolism*; D006801:Humans
chemical_list: D001905:Botulinum Toxins