TABLE 1.
Comparison of GeneXpert results to prior DFA and PCR test results
| GeneXpert resultb | No. of samples with indicated resulta |
||||
|---|---|---|---|---|---|
| DFA positive | RVP positive, DFA negative | DFA negative, PCR untested | DFA negative, RVP negative | Total | |
| Influenza A virus matrix gene detection | |||||
| TP | 26 | 8 | 6 | 0 | 40 |
| TN | 0 | 1 | 43 | 17 | 61 |
| FP | 0 | 0 | 0 | 0 | 0 |
| FN | 0 | 4 | 0 | 0 | 4 |
| 2009 H1N1 virus hemagglutinin gene detection | |||||
| TP | 25 | 5 | 1 | 0 | 31 |
| TN | 0 | 1 | 43 | 17 | 61 |
| FP | 0 | 0 | 0 | 0 | 0 |
| FN | 1 | 7 | 5 | 0 | 13 |
a
DFA, direct fluorescent antibody; RVP, respiratory viral panel PCR.
b
The gold standard test was the CDC RT-PCR assay. TP, true positive; TN, true negative; FP, false positive; FN, false negative.