Volume 21, Number 4—April 2015
Research
Influenza A(H7N9) Virus Transmission between Finches and Poultry
Jeremy C. Jones, Stephanie Sonnberg, Richard Webby, and Robert G. Webster
Table 3
Seroconversion among birds in an interspecies study of influenza A(H7N9) virus transmission*
| Challenge virus, species |
No. seroconverted/no. total, by transmission route† |
||||
| Waterborne |
Airborne |
||||
| Donor |
Naive contact |
Donor |
Naive contact |
||
| A/Anhui/1/2013 (H7N9), donor → naive contact | |||||
| Finch → chicken | 7/9 | 0/6 | 1/2 | 0/3 | |
| Chicken → finch | 3/6 | 0/7 | 3/3 | 0/1 | |
| Finch → quail | 6/9 | 4/4 | 2/3 | 0/3 | |
| Quail → finch |
6/6 |
0/6 |
2/2 |
0/3 |
|
| A/chicken/Rizhao/867/2013 (H7N9), donor → naive contact | |||||
| Finch → chicken | 5/10 | 2/6 | NT | NT | |
| Chicken → finch | 5/6 | 0/7 | NT | NT | |
| Finch → quail | 10/10 | 5/5 | NT | NT | |
| Quail → finch |
6/6 |
2/10 |
NT |
NT |
|
| *Prechallenge serum samples from 7 finches, 5 chickens, and 5 quail were confirmed influenza virus–negative by IIDEXX ELISA. Donor birds were inoculated with the challenge virus; contacts were not inoculated. NT, not tested. †Determined by using an influenza A virus blocking ELISA (IDEXX AI MultiS-Screen Ab Test; IDEXX Laboratories, Westbrook, ME, USA). A signal-to-noise cutoff of <0.5 was considered seroconversion. | |||||
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Page updated: March 17, 2015
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