Table 1.
2009/H1N1 Influenza viruses used in this study
| Influenza virus strains | Name in study | GenBank ID | Source | TCID50 | MLD50a |
|---|---|---|---|---|---|
| A/swine/Nanchang/3/2010 (H1N1) |
3/10 |
JF275917-JF275924 |
Tracheal mucus |
10-5.5 |
103TCID50 |
| A/swine/Nanchang/5/2010 (H1N1) |
5/10 |
JF275933-JF275940 |
Tracheal mucus |
10-3.2 |
NCb |
| A/swine/Nanchang/6/2010 (H1N1) |
6/10 |
JF275941-JF275948 |
Tracheal mucus |
10-4.4 |
NC |
| A/swine/Nanchang/F9/2010 (H1N1) |
F9/10 |
JF275925-JF275932 |
Lung tissue |
10-4.48 |
102.98TCID50 |
| A/Liaoning /14/2009(H1N1) | LN/09 | KC683492-KC683499 | Nasal swab | 10-5.5 | NC |
aThe 50% mouse lethal dose (MLD50) was determined by intranasally inoculating groups of ten mice with serial 10-fold dilutions of each virus in a final volume of 50 μL and calculated by the method of Reed and Muench [25].
bNC indicates the MLD50 of the strains could not be counted due to low mortality or no lethality for mice.