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Journal of Clinical Microbiology, 08 1997, 2120-2123, Vol 35, No. 8
AN Gurfield, HJ Boulouis, BB Chomel, R Heller, RW Kasten, K Yamamoto and Y Piemont
Bartonella clarridgeiae and several strains of Bartonella henselae, the
agent of cat scratch disease, with variations in the 16S rRNA gene have
been found to infect the blood of cats. An epidemiologic study of
Bartonella infection in domestic French cats revealed that of 436 cats
sampled, 5 cats (1.1%) were coinfected with B. henselae and B. clarridgeiae
and 2 cats (0.5%) were coinfected with two strains of B. henselae with
variations in the 16S rRNA gene, B. henselae type I and type II. In an
indirect immunofluorescence assay, coinfected cats tested positive for both
Bartonella species at titers of > or = 128. Identification of the
colonies was achieved by preformed enzyme analysis, PCR-restriction
fragment length polymorphism analysis of the citrate synthase gene, and 16S
rRNA gene sequencing. Colony size differences in mixed culture allowed
differentiation of the Bartonella species. The coinfection of cats with two
Bartonella species or variants of the same species raises concern about the
possibility of dual infection in humans. The development of a polyvalent
vaccine targeted against the most pathogenic or invasive strains may be a
means of protecting cats and man from infection.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Coinfection with Bartonella clarridgeiae and Bartonella henselae and with different Bartonella henselae strains in domestic cats
Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, 95616, USA.
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