Abstract
The Binax NOW Flu A and Flu B (Binax NOW), direct fluorescent assay (DFA), and viral culture were evaluated and compared with a composite of viral culture or reverse transcription polymerase chain reaction (RT-PCR). Participants with medically attended acute respiratory illness were identified through active surveillance during the 2006 to 2007 season, and consenting individuals (n = 932) were tested for influenza by culture and RT-PCR. Physicians ordered a rapid antigen test (Binax NOW [n = 73] or DFA [n = 70]) according to their clinical judgment. The Binax NOW detected 11 of 18 influenza infections (sensitivity, 61%; 95% confidence interval [CI], 36-83%), whereas DFA detected 17 of 21 influenza infections (sensitivity 81%, 95% CI, 58-95%). Compared with culture/RT-PCR, specificity of both Binax NOW and DFA was 100%. During the 2006 to 2007 influenza season, DFA and Binax NOW demonstrated high specificity but failed to identify a substantial proportion of influenza infections.
Original language | English (US) |
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Pages (from-to) | 162-166 |
Number of pages | 5 |
Journal | Diagnostic Microbiology and Infectious Disease |
Volume | 62 |
Issue number | 2 |
DOIs | |
State | Published - Oct 2008 |
Keywords
- Binax NOW
- Direct fluorescent assay
- Influenza virus
- Rapid test
- Sensitivity
- Specificity
ASJC Scopus subject areas
- Microbiology (medical)
- Infectious Diseases