Table 2.
Heterologous challenge | Measurement of protectiona | HI GMT to challenge(vaccine)bvirus | Outcomec | Ref. | Total EpiCC score(×102) | ||
---|---|---|---|---|---|---|---|
H1N1 Virus | Percentage of macroscopic pneumonia | Virus titers in nasal swabs | Virus titers in lungs | ||||
MN02 H1β | Reduced | Reduced | Not available | 80 (381) | Protection | 7 | 5.38 |
IA92 H1α | Significantly reduced | Significantly reduced | Not available | ≤20 (320) | Protection | 9 | 1.61 |
CA09 H1pdm | Significantly reduced | Significantly reduced | Significantly reduced | ≤10 (53d) | Protection | 6 | 0.63 |
OH10 H1γ | Significantly reduced | Not available | Significantly reduced | ≤10 (109) | Protection | 10 | 1.64 |
MN11 H1γ | Significantly reduced | Significantly reduced | Significantly reduced | ≤20 (117) | Protection | 11 | 2.10 |
IL08 H1α | Not significantly different | Significantly reduced | Significantly reduced | ≤20 (240) | Partial protection | 12 | ‐1.34 |
Significance of outcomes was as measured and reported in the original references.
HI GMT to the challenge and homologous viruses are shown.
The vaccine was considered protective if it reduced macroscopic pneumonia and virus titers in nasal swabs and/or in lungs collected at necropsy. If the vaccine significantly reduced virus titers, but not lung lesions, it was considered partially protective.
HI GMT to a heterologous γ‐cluster virus (A/Swine/OH/51145/2007 H1N1).