Table 2

Bartonella PCR amplification results from blood, serum, and enrichment blood culture processed using the BAPGM platform by collection group

No. (%)Pb
Group 1: 1 collection in 1 wkGroup 2: 3 collections in 1 wk
Blood
    Direct extraction3 (5.4)3 (8.3)0.67
    BAPGM enrichment3 (5.4)7 (19.4)0.04c
    Subculture isolates0 (0.0)0 (0.0)d
    Totala5 (9.1)10 (27.8)0.02c
Serum
    Direct extraction4 (7.3)4 (11.1)0.71
    BAPGM enrichment0 (0.0)0 (0.0)
    Subculture Isolates0 (0.0)0 (0.0)
    Total4 (7.3)4 (11.1)0.71
Blood and serum combined
    Direct extraction6 (10.9)7 (19.4)0.35
    BAPGM enrichment3 (5.4)7 (19.4)0.04c
    Subculture isolates0 (0.0)0 (0.0)
    Total7 (12.7)12 (33.3)0.02c
  • a Numbers do not sum to the total because an individual could be positive at more than one stage of the BAPGM platform.

  • b The Fisher exact test was used when the cell size was <5.

  • c Statistically significant difference.

  • d —, no statistics were calculated for zero cell comparisons.