Bartonella schoenbuchensis isolated from the blood of a French cow.

Unité des Rickettsies CNRS UMR-A 6020, IFR 48, Faculté de Médecine, Université de la Méditerranée, 13385 Marseilles Cedex 05, France.
Annals of the New York Academy of Sciences (Impact Factor: 4.31). 07/2003; 990:236-8. DOI: 10.1111/j.1749-6632.2003.tb07370.x
Source: PubMed
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    ABSTRACT: The presence of Bartonella spp. has been investigated in domestic ungulates grazing in communal pastures from a mountain area in northern Spain, where 18.3% (17/93) of cattle were found to be positive by PCR/RLB, whereas sheep (n=133) or horses (n=91) were found not infected by this pathogen. Bartonella infection was significantly associated with age, since older animals showed higher prevalence compared to heifers and calves. In contrast to other studies, B. chomelii was the most frequent species found in cattle (14/17), while B. bovis was detected only in three animals. Moreover, 18 B. chomelii and one B. bovis isolates were obtained from nine animals. Afterwards, B. chomelii isolates were characterized by a Multi Locus Sequence Typing (MLST) method which was adapted in this study. This method presented a high discrimination power, identifying nine different sequence types (STs). This characterization also showed the presence of different STs simultaneously in the same host and switched STs over time in one of the animals. In addition, B. chomelii STs seems to group phylogenetically in two different lineages. The only B. bovis isolate was characterized with a MLST method already described. This isolate corresponded to a new ST which is located in the lineage I, where the B. bovis strains infecting Bos taurus subspecies taurus are grouped. Further studies on the dynamics of Bartonella infection in cattle and the potential ectoparasites involved in the transmission of this microorganism should be performed, improving the knowledge about the interaction of Bartonella spp. and domestic ungulates.
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