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Two patients with headache and pleocytosis were diagnosed with Rickettsia felis infection using a polymerase chain reaction of cerebrospinal fluid and serological testing. Sequencing of the amplified products showed that they were 99-100% homologous to R. felis. These cases add to our knowledge of the clinical manifestations, as well as the geographical distribution, of this spotted fever agent.
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Lindblom et al. (2010) studied this question.
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