TABLE 1.
Airborne transmission study of wild-type and rescued SH7 and SH14 viruses
| Virus and group | Virus shedding on daya: |
Seroconversionb (HI titer) | |||
|---|---|---|---|---|---|
| 3 | 5 | 7 | 9 | ||
| SH7 | |||||
| Inoculated | 3/3 | 3/3 | 2/3 | 0/3 | 3/3 (1,280, 1,280, 1,280) |
| Exposed | 1/3 | 3/3 | 3/3 | 3/3 | 3/3 (640, 640, 1,280) |
| SH14 | |||||
| Inoculated | 3/3 | 3/3 | 2/3 | 0/3 | 3/3 (1,280, 1,280, 1,280) |
| Exposed | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 (<10, <10, <10) |
| rSH7 | |||||
| Inoculated | 3/3b | 3/3 | 2/3 | 0/3 | 3/3 (1,280, 1,280, 1,280) |
| Exposed | 1/3 | 3/3 | 3/3 | 3/3 | 3/3 (320, 320, 640) |
| rSH14 | |||||
| Inoculated | 3/3 | 3/3 | 2/3 | 0/3 | 3/3 (1,280, 1,280, 1,280) |
| Exposed | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 (<10, <10, <10) |
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/postexposure.