title: Letter from the editor.
authors.forename: Ronald
authors.initials: R
authors.lastname: Ellis
authors.forename: Adam C
authors.initials: AC
authors.lastname: Weiss
mesh_terms: D001424:Bacterial Infections / Q000453:epidemiology / Q000517:prevention & control*; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology* / Q000302:isolation & purification; D017277:Drug Approval; D006801:Humans; D014765:Viral Vaccines / Q000008:administration & dosage / Q000276:immunology* / Q000302:isolation & purification; D014777:Virus Diseases / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D001428:Bacterial Vaccines; D014765:Viral Vaccines