TABLE 1.

Persistent presence of B. burgdorferi in the hearts of infected mice

MiceTime of B. burgdorferi infection% PCR positive for OspA (no. positive/total)a
NZBNone (control)0 (0/3)
NZB6 weeks60 (3/5)
NZB8 months100 (4/4)
  • a Each group was tested for the OspA gene in the heart and spleen by semiquantitative PCR.