Volume 17, Number 4—April 2011
Dispatch
Rapid Genotyping of Swine Influenza Viruses
Table 2
Virus | PB2 | PB1 | PA | HA | NP | NA† | M | NS |
---|---|---|---|---|---|---|---|---|
Pandemic (H1N1) 2009 | + + | + + | + + | + + | + + | + + | + + | + + |
Swine Eurasian avian-like | – – | – – | – – | – – | – – | – + | – + | – – |
Swine triple reassortant | – + | – + | – + | – + | – + | – – | – – | – + |
Human seasonal subtypes H1 and H3 | – – | – – | – – | – – | – – | – – | – – | – – |
*PB, polymerase basic protein; PA, polymerase acidic protein; HA, hemagglutinin; NP, nucleocapsid protein; NA, neuraminidase; M, matrix protein; NS, nonstructural protein. Red symbols indicate pandemic (H1N1) 2009 virus–specific probe results; black symbols indicate SYBR Green results; gray shading indicates sister clade of pandemic (H1N1) 2009 virus for each virus segment.
†N2 and some of the N1 within swine Euarasian avian-like lineage are expected to be double negative in the NA test.
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