Direct RNA detection
As demonstrated by the current definitions of HPAI, molecular techniques have been used in
diagnosis for some time now. Furthermore, there have recently been developments towards
their application to the detection and characterisation of influenza A viruses directly from clinical
specimens of infected birds. It is imperative that when using highly sensitive molecular detection
methods that allow rapid direct detection of viral RNA for confirmatory laboratory diagnosis of
influenza A infections, stringent protocols are in place to prevent the risk of cross-contamination
between clinical samples. In addition, RNA detection test methodologies should be validated to
the OIE standard (see Chapter 1.1.5 Principles and methods of validation of diagnostic assays
for infectious diseases) using clinical material to demonstrate the tests as being ‘fit for purpose’
for application in a field diagnostic setting, which may include the use of internal test standards.
The control reactions enable greater confidence in the integrity of the molecular reactions,
clinical samples and results
Direct RNA detection
As demonstrated by the current definitions of HPAI, molecular techniques have been used in
diagnosis for some time now. Furthermore, there have recently been developments towards
their application to the detection and characterisation of influenza A viruses directly from clinical
specimens of infected birds. It is imperative that when using highly sensitive molecular detection
methods that allow rapid direct detection of viral RNA for confirmatory laboratory diagnosis of
influenza A infections, stringent protocols are in place to prevent the risk of cross-contamination
between clinical samples. In addition, RNA detection test methodologies should be validated to
the OIE standard (see Chapter 1.1.5 Principles and methods of validation of diagnostic assays
for infectious diseases) using clinical material to demonstrate the tests as being ‘fit for purpose’
for application in a field diagnostic setting, which may include the use of internal test standards.
The control reactions enable greater confidence in the integrity of the molecular reactions,
clinical samples and results
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