Fleas of prairie dogs have been implicated in the transmission of Bartonella spp. We used PCR to test DNA extracts from 47 fleas of prairie dogs from 6 states. We amplified DNA from 5 unique genotypes of Bartonella spp. and 1 Rickettsia sp. from 12 fleas collected in North Dakota, Oklahoma, Texas, and Wyoming. Sequences from the Bartonella spp. were similar, but not identical, to those from prairie dogs and their fleas in Colorado.

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