Table 2.

Outcome of acute Q fever diagnostics according to a diagnostic algorithm in 825 patients referred from 15 to 31 May 2009

StatusNo. of samples with definitive outcomeRelative outcome overall (%)
In first serum sampleIn follow-up serum sampleOverall
Acute Q fever1905524529.7
Past resolved Q fever2130.4
No acute Q fever11612924529.7
Cross-reactivity0440.5
Inconclusive outcome299230136.5
Inconsistency with the diagnostic algorithm
    Acute Q fever7411
    No acute Q fever549
    Cross-reactivity022
    Inconclusive outcome505
    Total with inconsistent result1710273.3