Table 1.

Performance of rapid diagnostic tests for the detection of influenza virus infection in nasal wash samples compared to viral culture

TestnSensitivity (%)Specificity (%)Predictive value (%)
PositiveNegative
Neuraminidase assay47970.192.476.389.9
IFA321a 59.89788.186.6
EIA for influenza A virus
 Detection of influenza A virus41789.798.193.596.9
 Detection of influenza A or B virus41774.39893.590.7
  • a A total of 423 samples were tested, but 102 were found to have inadequate numbers of cells.