title: Short- and long-term efficacy of single-dose subunit vaccines against Yersinia pestis in mice.
abstract: A single, subcutaneous, 30-microg dose of either a combination of the Yersinia pestis proteins F1+V or a F1-V fusion protein adsorbed to the adjuvant aluminum hydroxide, protected Hsd:ND4 mice for one year against pneumonic plague. The recombinant F1+V vaccine provided significant protection as early as day 14 postimmunization. The current Plague Vaccine USP in a single 0.2-ml dose did not provide significant protection in this mouse model. Antibody titers to F1 and V peaked at approximately 5-12 weeks postimmunization and were still detectable one year later. These F1 and V subunit vaccines may offer effective long-term immunity with a reduced dosage schedule when compared with the presently licensed, formalin-killed, whole-cell vaccine.
authors.affiliation: Bacteriology Division, U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland 21702-5011, USA.
authors.forename: G W
authors.initials: GW
authors.lastname: Anderson
authors.forename: D G
authors.initials: DG
authors.lastname: Heath
authors.forename: C R
authors.initials: CR
authors.lastname: Bolt
authors.forename: S L
authors.initials: SL
authors.lastname: Welkos
authors.forename: A M
authors.initials: AM
authors.lastname: Friedlander
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis; D000942:Antigens, Bacterial / Q000276:immunology; D004306:Dose-Response Relationship, Immunologic; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D051379:Mice; D010930:Plague / Q000517:prevention & control*; D010931:Plague Vaccine / Q000008:administration & dosage / Q000276:immunology / Q000592:standards*; D011993:Recombinant Fusion Proteins / Q000276:immunology; D011994:Recombinant Proteins / Q000276:immunology; D014614:Vaccines, Synthetic / Q000008:administration & dosage / Q000276:immunology / Q000592:standards; D015010:Yersinia pestis / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D010931:Plague Vaccine; D011993:Recombinant Fusion Proteins; D011994:Recombinant Proteins; D014614:Vaccines, Synthetic