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Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia
The genera Anaplasma, Ehrlichia, Cowdria, Neorickettsia and Wolbachia encompass a group of obligate intracellular bacteria that reside in vacuoles of eukaryotic cells and were previously placed inExpand
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Molecular basis for surface antigen size polymorphisms and conservation of a neutralization-sensitive epitope in Anaplasma marginale.
Anaplasmosis is one of several tick-borne diseases severely constraining cattle production and usage in many parts of the world. Cattle can be protected from anaplasmosis by immunization with majorExpand
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Molecular characterization of a 28 kDa surface antigen gene family of the tribe Ehrlichiae.
Antisera against different Ehrlichiae recognize an immunodominant, cross-reacting approximately 28 kDa surface antigen defined as the MAP1 in Cowdria ruminantium. These antigens are consideredExpand
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Anaplasmosis Control: Past, Present, and Future
Abstract: Control methods for anaplasmosis have not changed markedly during the past 50 years and include arthropod control, chemoprophylaxsis, vaccination, and maintenance of an Anaplasma‐free herd.Expand
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Expression of Multiple Outer Membrane Protein Sequence Variants from a Single Genomic Locus of Anaplasma phagocytophilum
ABSTRACT Anaplasma phagocytophilum is the causative agent of an emerging tick-borne zoonosis in the United States and Europe. The organism causes a febrile illness accompanied by other nonspecificExpand
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Transformation of Anaplasma phagocytophilum
BackgroundTick-borne pathogens cause emerging zoonoses, and include fastidious organisms such as Anaplasma phagocytophilum. Because of their obligate intracellular nature, methods for mutagenesis andExpand
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Putative adhesins of Anaplasma marginale: major surface polypeptides 1a and 1b.
Genes for the MSP1a and MSP1b subunits of the Anaplasma marginale surface antigen complex MSP1 were previously cloned and expressed in Escherichia coli. We report here the localization of MSP1a andExpand
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A cloned DNA probe identifies Cowdria ruminantium in Amblyomma variegatum ticks.
Heartwater, caused by Cowdria ruminantium and transmitted by ticks of the genus Amblyomma, is a constraint to ruminant animal production in sub-Saharan Africa. This rickettsial disease could spreadExpand
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Antigenic variation of Anaplasma marginale msp2 occurs by combinatorial gene conversion
The rickettsial pathogen Anaplasma marginale establishes lifelong persistent infection in the mammalian reservoir host, during which time immune escape variants continually arise in part because ofExpand
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Western Immunoblot Analysis of the Antigens ofHaemobartonella felis with Sera from Experimentally Infected Cats
ABSTRACT Cats were experimentally infected with a Florida isolate ofHaemobartonella felis in order to collect organisms and evaluate the immune response to H. felis. Cryopreserved organisms wereExpand
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