Which rapid test is used to diagnose avian influenza (H5N1)?

Updated: Aug 07, 2020
  • Author: Hien H Nguyen, MD, MS; Chief Editor: Michael Stuart Bronze, MD  more...
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The standard commercially available rapid influenza A tests do not detect H5N1 avian influenza. [41] A rapid test from nasopharyngeal swab specific to H5N1 influenza (Arbor Vita Corporation) was approved by the FDA in 2009. [42]

A CBC may be more clinically useful in avian influenza than in seasonal influenza. Leukopenia (WBC count 454-4900/µL), especially lymphopenia, is common and is observed in 50-80% of patients. [43] In at least one study, lymphopenia at presentation (absolute lymphocyte count < 1500/µL) was a significant predictor of the progression to acute respiratory distress syndrome. [44] More than half of patients will have mild-to-moderate thrombocytopenia.

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