About: Pandemic influenza A/H1N1 2009 and seasonal influenza viruses are currently co-circulating worldwide. A rapid, sensitive, and specific assay for distinguishing pandemic influenza A/H1N1 2009 from seasonal influenza viruses and for subtyping seasonal influenza A viruses could aid in the surveillance and control of these viral infections. Here, such a multiplex real-time RT-PCR (rRT-PCR) assay for typing influenza A and B viruses and the pandemic influenza A/H1N1 2009 is developed. This assay can also subtype seasonal influenza A viruses simultaneously. The analytical sensitivity is 10–10(4) copies/reaction. The coefficients of variation of inter-assay and intra-assay are 0.04–0.45% and 0.08–0.97%, respectively. The new multiplex rRT-PCR assay is more sensitive in subtyping seasonal influenza viruses than the conventional PCR techniques. Results obtained with this assay for the detection of pandemic influenza A/H1N1 2009 are highly consistent (96.88%) with those achieved using the US CDC's rRT-PCR protocol. A sample identified as “pandemic influenza A/H1N1 2009 positive” by the US CDC's rRT-PCR was reclassified correctly as subtype H3N2 using this assay. Taken together, this new multiplex rRT-PCR protocol could be an important tool for improving diagnosis and management of the pandemic influenza A/H1N1 2009 and seasonal influenza viruses.

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About: Pandemic influenza A/H1N1 2009 and seasonal influenza viruses are currently co-circulating worldwide. A rapid, sensitive, and specific assay for distinguishing pandemic influenza A/H1N1 2009 from seasonal influenza viruses and for subtyping seasonal influenza A viruses could aid in the surveillance and control of these viral infections. Here, such a multiplex real-time RT-PCR (rRT-PCR) assay for typing influenza A and B viruses and the pandemic influenza A/H1N1 2009 is developed. This assay can also subtype seasonal influenza A viruses simultaneously. The analytical sensitivity is 10–10(4) copies/reaction. The coefficients of variation of inter-assay and intra-assay are 0.04–0.45% and 0.08–0.97%, respectively. The new multiplex rRT-PCR assay is more sensitive in subtyping seasonal influenza viruses than the conventional PCR techniques. Results obtained with this assay for the detection of pandemic influenza A/H1N1 2009 are highly consistent (96.88%) with those achieved using the US CDC's rRT-PCR protocol. A sample identified as “pandemic influenza A/H1N1 2009 positive” by the US CDC's rRT-PCR was reclassified correctly as subtype H3N2 using this assay. Taken together, this new multiplex rRT-PCR protocol could be an important tool for improving diagnosis and management of the pandemic influenza A/H1N1 2009 and seasonal influenza viruses. Goto Sponge NotDistinct Permalink

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type	abstract
value	Pandemic influenza A/H1N1 2009 and seasonal influenza viruses are currently co-circulating worldwide. A rapid, sensitive, and specific assay for distinguishing pandemic influenza A/H1N1 2009 from seasonal influenza viruses and for subtyping seasonal influenza A viruses could aid in the surveillance and control of these viral infections. Here, such a multiplex real-time RT-PCR (rRT-PCR) assay for typing influenza A and B viruses and the pandemic influenza A/H1N1 2009 is developed. This assay can also subtype seasonal influenza A viruses simultaneously. The analytical sensitivity is 10–10(4) copies/reaction. The coefficients of variation of inter-assay and intra-assay are 0.04–0.45% and 0.08–0.97%, respectively. The new multiplex rRT-PCR assay is more sensitive in subtyping seasonal influenza viruses than the conventional PCR techniques. Results obtained with this assay for the detection of pandemic influenza A/H1N1 2009 are highly consistent (96.88%) with those achieved using the US CDC's rRT-PCR protocol. A sample identified as “pandemic influenza A/H1N1 2009 positive” by the US CDC's rRT-PCR was reclassified correctly as subtype H3N2 using this assay. Taken together, this new multiplex rRT-PCR protocol could be an important tool for improving diagnosis and management of the pandemic influenza A/H1N1 2009 and seasonal influenza viruses.
part of	Simultaneous typing and HA/NA subtyping of influenza A and B viruses including the pandemic influenza A/H1N1 2009 by multiplex real-time RT-PCR
is abstract of	Simultaneous typing and HA/NA subtyping of influenza A and B viruses including the pandemic influenza A/H1N1 2009 by multiplex real-time RT-PCR

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