Table 1.
Swine and human H1N1 and H1N2 influenza A virus (IAV) used as test antigens in hemagglutination inhibition assays and for the generation of antisera (in bold).
| Viruses | H1 clade | Subtype | Accession number |
|---|---|---|---|
| A/swine/Iowa/15/1930 | H1-α | H1N1 | AF091308 |
| A/swine/Iowa/1945 | H1-α | H1N1 | EU139824 |
| A/swine/Wisconsin/1/1968 | H1-α | H1N1 | EU139825 |
| A/swine/Iowa/1973 | H1-α | H1N1 | EU139826 |
| A/swine/Minnesota/02053/2008 | H1-α | H1N1 | HM461762 |
| A/swine/Minnesota/02093/2008 | H1-α | H1N1 | HM461794 |
| A/swine/North Carolina/36883/2002 | H1-β | H1N1 | EU139829 |
| A/swine/Iowa/00239/2004 | H1-β | H1N1 | EU139832 |
| A/swine/Iowa/02096/2008 | H1-β | H1N1 | HM461842 |
| A/swine/Kentucky/02086/2008 | H1-β | H1N1 | HM461786 |
| A/swine/Nebraska/02013/2008 | H1-β | H1N1 | HM461834 |
| A/swine/North Carolina/02084/2008 | H1-β | H1N1 | HM461826 |
| A/swine/Minnesota/A01076180/2009 | H1-β | H1N1 | JX042526 |
| A/swine/Minnesota/03012/2010 | H1-β | H1N1 | KY290625 |
| A/swine/Missouri/A01076190/2010 | H1-β | H1N1 | JQ809747 |
| A/swine/Minnesota/37866/1999 | H1-γ2 | H1N1 | EU139827 |
| A/swine/Minnesota/1192/2001 | H1-γ | H1N2 | CY098468 |
| A/swine/Minnesota/00194/2003 | H1-γ | H1N2 | EU139830 |
| A/swine/Kansas/00246/2004 | H1-γ | H1N2 | EU139831 |
| A/swine/Ohio/511445/2007 | H1-γ | H1N1 | EU604689 |
| A/swine/North Carolina/02023/2008 | H1-γ | H1N1 | HM461818 |
| A/swine/Ohio/02026/2008 | H1-γ | H1N1 | HM461778 |
| A/swine/Missouri/02060/2008 | H1-γ | H1N1 | HM461810 |
| A/swine/Minnesota/03011/2010 | H1-γ | H1N1 | KY290621 |
| A/swine/Indiana/3062/2010 | H1-γ | H1N1 | KY290626 |
| A/swine/Illinois/3134/2010 | H1-γ | H1N2 | KY290622 |
| A/swine/Minnesota/03003/2010 | H1-γ | H1N1 | KY290631 |
| A/California/04/2009 | pH1N1 | H1N1 | FJ966082 |
| A/Mexico/4108/2009 | pH1N1 | H1N1 | GQ149654 |
| A/New York/18/2009 | pH1N1 | H1N1 | FJ984355 |
| A/swine/Illinois/32974/2009 | pH1N1 | H1N1 | GU480922 |
| A/swine/Illinois/02991/2010 | pH1N1 | H1N1 | KY290630 |
| A/swine/Minnesota/03019/2010 | pH1N1 | H1N1 | KY290624 |
| A/swine/North Carolina/03029/2010 | pH1N1 | H1N2 | KY290623 |
| A/swine/Indiana/03053/2010 | pH1N1 | H1N2 | KY290627 |
| A/swine/Illinois/5265–1/2010 | pH1N1 | H1N1 | GU984405 |
| A/swine/Minnesota/8761/2010 | pH1N1 | H1N1 | GU984411 |
| A/swine/Illinois/07003243/2007 | H1-δ1 | H1N2 | FJ638314 |
| A/swine/Texas/01976/2008 | H1-δ1 | H1N2 | HM461850 |
| A/swine/Minnesota/02011/2008 | H1-δ1 | H1N2 | HM461802 |
| A/swine/Iowa/02039/2008 | H1-δ1a | H1N2 | HM461770 |
| A/swine/Iowa/02998/2010 | H1-δ1a | H1N2 | HM193850 |
| A/swine/Minnesota/A01134353/2011 | H1-δ1a | H1N2 | JQ906881 |
| A/swine/South Dakota/A01365260/2013 | H1-δ1a | H1N2 | KF746329 |
| A/swine/Minnesota/A01392045/2013 | H1-δ1a | H1N2 | KF715130 |
| A/swine/Nebraska/A01492366/2014 | H1-δ1a | H1N2 | KJ549771 |
| A/swine/Missouri/A01411322/2014 | H1-δ1a | H1N2 | KJ437545 |
| A/swine/Iowa/A01476931/2014 | H1-δ1a | H1N2 | KP288072 |
| A/swine/South Dakota/A01481702/2014 | H1-δ1a | H1N2 | KM013804 |
| A/swine/Illinois/A01047020/2010 | H1-δ1b | H1N2 | JQ756323 |
| A/swine/Minnesota/3128/2010 | H1-δ1b | H1N1 | CY158457 |
| A/swine/Illinois/3120/2010 | H1-δ1b | H1N2 | KY290619 |
| A/swine/Minnesota/03002/2010 | H1-δ1b | H1N2 | KY290620 |
| A/swine/Minnesota/A01301731/2012 | H1-δ1b | H1N2 | KC020465 |
| A/swine/South Dakota/A01349341/2013 | H1-δ1b | H1N2 | KC844209 |
| A/swine/Missouri/A01444664/2013 | H1-δ1b | H1N2 | KC562218 |
| A/swine/Nebraska/A01290601/2013 | H1-δ1b | H1N2 | KF791371 |
| A/swine/Iowa/A01432370/2013 | H1-δ1b | H1N2 | KC534990 |
| A/Swine/Indiana/A01260356/2013 | H1-δ1b | H1N2 | KF680052 |
| A/swine/Minnesota/A01366540/2014 | H1-δ1b | H1N2 | KJ175145 |
| A/swine/Indiana/A01260471/2014 | H1-δ1b | H1N2 | KJ650529 |
| A/swine/Illinois/A01410405/2014 | H1-δ1b | H1N2 | KJ605069 |
| A/swine/Iowa/A01410774/2014 | H1-δ1b | H1N2 | KJ859606 |
| A/swine/Illinois/00685/2005 | H1-δ2 | H1N1 | FJ638298 |
| A/swine/North Carolina/00573/2005 | H1-δ2 | H1N1 | FJ638306 |
| A/swine/Minnesota/07002083/2007 | H1-δ2 | H1N1 | FJ611898 |
| A/swine/Iowa/02955/2010 | H1-δ2 | H1N2 | KY284571 |
| A/swine/Missouri/03013/2010 | H1-δ2 | H1N2 | KY290628 |
| A/swine/Ohio/003295/2010 | H1-δ2 | H1N2 | KY284570 |
| A/swine/Minnesota/A01076626/2010 | H1-δ2 | H1N1 | JQ906871 |
| A/swine/Michigan/A01259001/2012 | H1-δ2 | H1N2 | KC508596 |
| A/swine/Ohio/A01351184/2013 | H1-δ2 | H1N2 | KF313148 |
| A/swine/North Carolina/A01290598/2013 | H1-δ2 | H1N2 | KF791368 |
| A/swine/Oklahoma/A01409770/2014 | H1-δ2 | H1N2 | KJ437589 |
| A/swine/North Carolina/A01475606/2014 | H1-δ2 | H1N2 | KM027346 |
| A/New Caledonia/20/1999 | H1-Human | H1N2 | DQ508857 |
| A/Michigan/2/2003 | H1-Human | H1N2 | CY016324 |
| A/Memphis/8/2003 | H1-Human | H1N2 | CY122316 |
| A/Solomon Islands/3/2006 | H1-Human | H1N2 | EU124177 |
| A/Brisbane/59/2007 | H1-Human | H1N2 | CY058487 |