TABLE 1.
Description of influenza viruses used in this study
| Origin | Strain | Statusa | Passageb | Subtype | Titer (TCID50/ml) |
|---|---|---|---|---|---|
| Avian | A/Green-winged teal/Louisiana/213/1987 | Control | SPFE1/C1 | H1N1 | 6.9 |
| Swine | A/Swine/Minnesota/02719/2009 | Non-PDM | C1/E1/C1 | H3N2 | 7.6 |
| Swine | A/Swine/North Carolina/02744/2009 | Non-PDM | C1/E1/C1 | H1N2 | 7.3 |
| Swine | A/Swine/Minnesota/02746/2009 | pH1N1 | C1/E1/C1 | H1N1 | 8.3 |
| Swine | A/Swine/Minnesota/02749/2009 | pH1N1 | C1/E1/C1 | H1N1 | 8.1 |
| Swine | A/Swine/Minnesota/02751/2009 | pH1N1 | C1/E1/C1 | H1N1 | 7.7 |
| Swine | A/Swine/Illinois/02860/2009 | pH1N1 | C1/E1/C1 | H1N1 | 7.4 |
| Swine | A/Swine/Utah/02861/2009 | Non-PDM | C1/E1/C1 | H1N2 | 7.5 |
| Swine | A/Swine/Iowa/15/1930 | Non-PDM | ?/E1/C1 | H1N1 | 6.5 |
| Human | A/New Jersey/08/1976 | Non-PDM | SPFE7/E1/C1 | H1N1 | 7.7 |
| Human | A/Texas/15/2009 | pH1N1 | C2/E1/C1 | H1N1 | 7.4 |
| Human | A/Mexico/INDRE4487/2009 | pH1N1 | E2/E1/E1/C1 | H1N1 | 7.1 |
| Human | A/Brisbane/10/2007 | Non-PDM | E2/E2/E1/C1 | H3N2 | 7.9 |
| Human | A/Brisbane/59/2007 | Non-PDM | E2/E2/E1/C1 | H1N1 | 6.5 |
| Human | A/California/04/2009 | pH1N1 | C1/C1/C1 | H1N1 | 6.7 |
a
pH1N1, 2009 pandemic H1N1 viruses; Non-PDM, nonpandemic viruses.
b
Sequential passage history. C, Madin-Darby canine kidney cells; E, embryonated chicken eggs; SPFE, specific-pathogen-free embryonated chicken eggs; ?, unknown primary isolation source. Numbers indicate the number of passages within each source/passage in a new source.