Volume 53, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The annual prevalence of in from 16 southern Texas localities was determined by screening 192 using in vitro culture. Eight woodrats also were screened using the polymerase chain reaction (PCR). Forty-six from four localities were also tested. Seasonal transmission was investigated through trap-recapture studies at three localities and analysis of infections in juveniles. Fourteen from four localities were culture-positive for , indicating an annual non-zero prevalence at these localities of 5.6–27%. Four additional infections at two foci were detected only by the PCR. Transmission occurred in the fall in each case in which season of transmission could be determined. No were positive. These data support the hypothesis that is a reservoir of in Texas.


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