Ehrlichia ruminantium variants which do not cause heartwater found in South Africa

Veterinary Microbiology

Volumn 120, Issue 1-2, 2007, Pages 158-166

  Allsopp, M T E P ^a   Van Strijp, M F ^a   Faber, E ^a   Josemans, A I ^a   Allsopp, B A ^b  

^a ONDERSTEPOORT VETERINARY INSTITUTE   (South Africa)

^b UNIVERSITY OF PRETORIA   (South Africa)

Author keywords

Ehrlichia ruminantium; Ehrlichiosis; Heartwater; Molecular diagnosis; Serology

Indexed keywords

ARTICLE; BACTERIAL GENE; BACTERIUM CULTURE; BLOOD SAMPLING; CATTLE; EHRLICHIA RUMINANTIUM; ENZYME LINKED IMMUNOSORBENT ASSAY; GENE SEQUENCE; GENOTYPE; GOAT; HEARTWATER DISEASE; HYALOMA MARGINATUM RUFIPES; HYALOMMA TRUNCATUM; IMMUNOFLUORESCENCE TEST; LIVESTOCK; NONHUMAN; NUCLEOTIDE SEQUENCE; POLYMERASE CHAIN REACTION; RHIPICEPHALUS EVERTSI EVERTSI; RHIPICEPHALUS EVERTSI MIMETICUS; SEROLOGY; SHEEP; SOUTH AFRICA; TICK;

ANIMALS; ANTIBODIES, BACTERIAL; ARTHROPOD VECTORS; CATTLE; ECTOPARASITIC INFESTATIONS; EHRLICHIA RUMINANTIUM; GENES, BACTERIAL; GENOTYPE; GOAT DISEASES; GOATS; HEARTWATER DISEASE; IXODIDAE; MOLECULAR SEQUENCE DATA; RNA, RIBOSOMAL, 16S; SHEEP; SHEEP DISEASES; SOUTH AFRICA;

ANIMALIA; CAPRA HIRCUS; EHRLICHIA RUMINANTIUM; HYALOMMA MARGINATUM RUFIPES; HYALOMMA TRUNCATUM; IXODIDA; OVIS ARIES; RHIPICEPHALUS EVERTSI EVERTSI; RHIPICEPHALUS EVERTSI MIMETICUS;

EID: 33846439439     PISSN: 03781135     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.vetmic.2006.10.026     Document Type: Article

References (20)

1. Allsopp M.T., Hattingh C.M., Vogel S.W., and Allsopp B.A. Evaluation of 16S, map1 and pCS20 probes for detection of Cowdria and Ehrlichia species. Epidemiol. Infect. 122 (1999) 323-328
2. Allsopp M.T., Visser E.S., Du Plessis J.L., Vogel S.W., and Allsopp B.A. Different organisms associated with heartwater as shown by analysis of 16S ribosomal RNA gene sequences. Vet. Parasitol. 71 (1997) 283-300
3. Bezuidenhout J.D., and Jacobsz C.J. Proof of transovarial transmission of Cowdria ruminantium by Amblyomma herbraeum. Onderstepoort J. Vet. Res. 53 (1986) 31-34
4. de la Fuente J., Blouin E.F., and Kocan K.M. Infection exclusion of the rickettsial pathogen Anaplasma marginale in the tick vector Dermacentor variabilis. Clin. Diagn. Lab. Immunol. 10 (2003) 182-184
5. Deem S.L. A review of heartwater and the threat of introduction of Cowdria ruminantium and Amblyomma spp. ticks to the American mainland. J. Zoo Wildl. Med. 29 (1998) 109-113
6. Du Plessis J.L. A method for determining the Cowdria ruminantium infection rate of Amblyomma hebraeum: effects in mice injected with tick homogenates. Onderstepoort J. Vet. Res. 52 (1985) 55-61
7. Du Plessis J.L. Increased pathogenicity of an Ehrlichia-like agent after passage through Amblyomma hebraeum: a preliminary report. Onderstepoort J. Vet. Res. 57 (1990) 233-237
8. Du Plessis J.L. The relationship between Cowdria and Ehrlichia: change in the behaviour of ehrlichial agents passaged through Amblyomma hebraeum. Rev. Elev. Med. Vet. Pays. Trop. 46 (1993) 131-143
9. Du Plessis J.L., Bezuidenhout J.D., Brett M.S., Camus E., Jongejan F., Mahan S.M., and Martinez D. The sero-diagnosis of heartwater: a comparison of five tests. Rev. Elev. Med. Vet. Pays. Trop. 46 (1993) 123-129
10. Feil E.J., and Spratt B.G. Recombination and the population structures of bacterial pathogens. Annu. Rev. Microbiol. 55 (2001) 561-590
11. Mahan S.M., Peter T.F., Simbi B.H., Kocan K., Camus E., Barbet A.F., and Burridge M.J. Comparison of efficacy of American and African Amblyomma ticks as vectors of heartwater (Cowdria ruminantium) infection by molecular analyses and transmission trials. J. Parasitol. 86 (2000) 44-49
12. Mahan S.M., Waghela S.D., McGuire T.C., Rurangirwa F.R., Wassink L.A., and Barbet A.F. A cloned DNA probe for Cowdria ruminantium hybridizes with eight heartwater strains and detects infected sheep. J. Clin. Microbiol. 30 (1992) 981-986
13. Maillard J.C., and Maillard N. Historique du peuplement bovin et de l'introduction de la tique Amblyomma variegatum dans les îles françaises des Antilles: synthèse bibliographique. Ethnozootechnie 1 (1998) 19-36
14. Mukhebi A.W., Chamboko T., O'Callaghan C.J., Peter T.F., Kruska R.L., Medley G.F., Mahan S.M., and Perry B.D. An assessment of the economic impact of heartwater (Cowdria ruminantium infection) and its control in Zimbabwe. Prev. Vet. Med. 39 (1999) 173-189
15. Peter T.F., Burridge M.J., and Mahan S.M. Competence of the African tortoise tick, Amblyomma marmoreum (Acari: Ixodidae), as a vector of the agent of heartwater (Cowdria ruminantium). J. Parasitol. 86 (2000) 438-441
16. Simpson B.C., Lindsay M.S., Morris J.R., Muirhead F.S., Pollock A., Prichard S.G., Stanley H.G., Thirlwell G.R., Hunter A.G., and Bradley J. Protection of cattle against heartwater in Botswana: comparative efficacy of different methods against natural and blood-derived challenges. Vet. Rec. 120 (1987) 135-138
17. Van Heerden H., Steyn H.C., Allsopp M.T., Zweygarth E., Josemans A.I., and Allsopp B.A. Characterization of the pCS20 region of different Ehrlichia ruminantium isolates. Vet. Microbiol. 101 (2004) 279-291
18. van Vliet A.H., van der Zeijst B.A., Camus E., Mahan S.M., Martinez D., and Jongejan F. Use of a specific immunogenic region on the Cowdria ruminantium MAP1 protein in a serological assay. J. Clin. Microbiol. 33 (1995) 2405-2410
19. Walker, A.R., Bouattour, A., Camicas, J.-L., Estrada-Peña, A., Horak, I.G., Latif, A.A., Pegram, R.G., Preston, P.M., 2003. Ticks of Domestic Animals in Africa: A Guide to Identification of Species. Bioscience Reports. 43 Comiston Drive, Edinburgh EH10 5QR, UK, p. 171.
20. Walker J.B., and Olwage A. The tick vectors of Cowdria ruminantium (Ixodoidea, Ixodidae, genus Amblyomma) and their distribution. Onderstepoort J. Vet. Res. 54 (1987) 353-379