TABLE 3.
Airborne transmission study of reassortant viruses with the SH14 backbone and genes from SH7
| Virus and group | Virus shedding on daya: |
Seroconversionb (HI titer) | |||
|---|---|---|---|---|---|
| 3 | 5 | 7 | 9 | ||
| 14-7HA | |||||
| Inoculated | 1/3 | 2/3 | 3/3 | 0/3 | 3/3 (640, 640, 1,280) |
| Exposed | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 (<10, <10, <10) |
| 14-7PA | |||||
| Inoculated | 1/3 | 2/3 | 3/3 | 0/3 | 3/3 (640, 640, 1,280) |
| Exposed | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 (<10, <10, <10) |
| 14-7(PA+HA) | |||||
| Inoculated | 3/3 | 3/3 | 3/3 | 0/3 | 3/3 (320, 640, 1,280) |
| Exposed | 0/3 | 1/3 | 2/3 | 3/3 | 3/3 (20, 40, 40) |
| 14-7(PA+HA+NP) | |||||
| Inoculated | 3/3 | 3/3 | 3/3 | 0/3 | 3/3 (640, 1,280, 1,280) |
| Exposed | 1/3 | 2/3 | 3/3 | 3/3 | 3/3 (40, 80, 160) |
| 14-7(PA+HA+NS) | |||||
| Inoculated | 1/3 | 3/3 | 3/3 | 0/3 | 3/3 (160, 320, 1,280) |
| Exposed | 0/3 | 2/3 | 3/3 | 3/3 | 3/3 (20, 80, 80) |
| 14-7(PA+HA+NP+NS) | |||||
| Inoculated | 1/3 | 3/3 | 2/3 | 0/3 | 3/3 (640, 640, 1,280) |
| Exposed | 1/3 | 3/3 | 3/3 | 2/3 | 3/3 (160, 320, 1,280) |
a
The number of days after chickens were inoculated/exposed. Data are numbers of chickens shedding virus/total number of chickens.
b
HI antibody titers of chickens on day 21 postinoculation/exposure.