| transmission of anaplasma marginale by boophilus microplus: retention of vector competence in the absence of vector-pathogen interaction. | whether arthropod vectors retain competence for transmission of infectious agents in the long-term absence of vector-pathogen interaction is unknown. we addressed this question by quantifying the vector competence of two tick vectors, with mutually exclusive tropical- versus temperate-region distributions, for genetically distinct tropical- and temperate-region strains of the cattle pathogen anaplasma marginale. the tropical cattle tick boophilus microplus, which has been eradicated from the con ... | 2003 | 12904396 |
| seroprevalence estimation and management factors associated with high herd seropositivity for anaplasma marginale in commercial dairy farms of puerto rico. | a cross-sectional study was conducted to determine individual cow seroprevalence of anaplasma marginale in adult lactating dairy cattle of puerto rico (pr) and to assess the associations of farm management factors on herd seroprevalence. antibody activity against a. marginale was determined using the msp-5 competitive enzyme-linked immunosorbent assay. serum samples were obtained from 2,414 adult lactating dairy cattle from 76 randomly selected commercial dairy farms. herd seroprevalence ranged ... | 2009 | 19337849 |
| an assessment of the role of white-tailed deer in the epizootiology of anaplasmosis in the southeastern united states. | the role of white-tailed deer (odocoileus virginianus) in the epizootiology of anaplasmosis in the southeastern united states was examined through retrospective and prospective serosurveys and by experimental infection studies. no serum antibody reactive to anaplasma marginale was detected with an indirect fluorescent antibody (ifa) assay from any of 1,376 free-ranging deer sampled from 1968 through 1990 from 13 states and puerto rico. thirty-one additional deer from three bovine anaplasmosis en ... | 1995 | 8592360 |
| diagnostic accuracy of methods for detecting anaplasma marginale infection in lactating dairy cattle of puerto rico. | bovine anaplasmosis (ba) is a hemoparasitic disease of great importance in cattle within the tropical and subtropical regions of the world. control programs for ba require accurate diagnostic assays but validation can be challenging because the true disease status of all animals is frequently not known with certainty. the objective of this study was to estimate the accuracy of assays for detection of anaplasma marginale infection in lactating dairy cattle of puerto rico using bayesian methods wi ... | 2010 | 20224076 |