title: Borrelia burgdorferi infection in a natural population of Peromyscus Leucopus mice: a longitudinal study in an area where Lyme Borreliosis is highly endemic.
abstract: Blood samples from Peromyscus leucopus mice captured at an enzootic site in Connecticut were examined for antibodies to and DNA of Borrelia burgdorferi, to characterize the dynamics of infection in this reservoir population. From trappings conducted over the course of 2 transmission seasons, 598 (75%) of 801 serum samples from 514 mice were found to be positive by enzyme immunoassay. Seropositivity correlated with date of capture and mouse age, was similar among locations within the site, increased from 57% to 93% over the course of the transmission season, and was associated with antibodies to outer surface protein (Osp) C, but not to OspA. Longitudinal samples from 184 mice revealed an incidence of 0.2 cases/mouse/week. Nineteen (10%) of 187 samples were found by polymerase chain reaction to be positive for B. burgdorferi, and, of those, 14 (74%) were found to be seropositive. Nearly the entire population of P. leucopus mice became infected with B. burgdorferi by late August, coinciding with the peak activity period of host-seeking larvae uninfected with the spirochete Ixodes scapularis, thereby perpetuating the agent through succeeding generations of ticks.
authors.affiliation: Department of Microbiology and Molecular Genetics, University of California Irvine, Irvine, California 92697-4025, USA.
authors.forename: Jonas
authors.initials: J
authors.lastname: Bunikis
authors.forename: Jean
authors.initials: J
authors.lastname: Tsao
authors.forename: Catherine J
authors.initials: CJ
authors.lastname: Luke
authors.forename: Maria G
authors.initials: MG
authors.lastname: Luna
authors.forename: Durland
authors.initials: D
authors.lastname: Fish
authors.forename: Alan G
authors.initials: AG
authors.lastname: Barbour
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology; D015153:Blotting, Western / Q000662:veterinary; D025065:Borrelia burgdorferi / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D003237:Connecticut / Q000453:epidemiology; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004197:Disease Reservoirs / Q000662:veterinary; D019353:Endemic Diseases; D005260:Female; D007124:Immunoenzyme Techniques / Q000662:veterinary; D015994:Incidence; D018884:Ixodes / Q000382:microbiology; D008137:Longitudinal Studies; D008193:Lyme Disease / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D010542:Peromyscus; D016133:Polymerase Chain Reaction / Q000662:veterinary; D012376:Rodent Diseases / Q000453:epidemiology / Q000382:microbiology*; D012621:Seasons; D016036:Seroepidemiologic Studies
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D004269:DNA, Bacterial; C079616:OspC protein