Population Genetic Analysis of Bartonella bacilliformis Isolates from Areas of Peru Where Carrion's Disease Is Endemic and Epidemic

An improved serial-digital data receiver that receives a scrambled NRZI voltage signal representing a transmitted serial-digital data signal converts the scrambled NRZI voltage signal in the analog domain to a bi-polar or pseudo-ternary voltage signal. The bi-polar voltage signal is then input to a slicer and clock recovery circuit to provide a recovered clock signal and a scrambled NRZ data signal in the digital domain. The scrambled NRZ data signal is then descrambled to recover the transmitted serial-digital data signal. Single bit error identification and limited correction may be included by using a sequential state machine decoder to generate an error flag and by using a "soft-decision" circuit to identify the probable bit error location. The probable bit error location is used to invert suspected bit errors, partially correcting the bit errors, and the error flag is used to control a switch that selects either the scrambled NRZ data signal or the partially corrected version of the scrambled NRZ data signal for descrambling.