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 2
Virus transmission, shedding, sickness, and death among birds in an interspecies study of influenza A(H7N9) virus transmission*
| Virus, donor/naive contact, transmission route |
No. with OP virus shedding/no. total (%) |
Clinical signs of illness† |
No. died/no. total (%) species |
|||
| Donors |
Naive contacts |
Donors |
Naive contacts |
|||
| A/Anhui/1/2013 (H7N9) | ||||||
| Finch/chicken | ||||||
| Waterborne | 10/10 (100) | 0/6 (0) | − | − | 1/10 (10) finches | |
| Airborne | 2/2 (100) | 0/3 (0) | − | − | 0 | |
| Finch/quail | ||||||
| Waterborne | 10/10 (100) | 6/6 (100) | − | + | 1/10 (10) finches; 2/6 (33) quail | |
| Airborne | 3/3 (100) | 0/3 (0) | − | − | 0 | |
| Chicken/finch | ||||||
| Waterborne | 6/6 (100) | 3/8 (38) | − | − | 1/8 (13) finch | |
| Airborne | 3/3 (100) | 0/2 (0) | − | − | 1/2 (50) finch | |
| Quail/finch | ||||||
| Waterborne | 6/6 (100) | 2/10 (20) | + | − | 0 | |
| Airborne |
3/3 (100) |
0/3 (0) |
+ |
− |
1/3 (33) quail |
|
| A/chicken/Rizhao/867/2013 (H7N9) | ||||||
| Finch/chicken | ||||||
| Waterborne | 10/10 (100) | 2/6 (33) | − | − | 0 | |
| Airborne | NA | NA | NA | NA | NA | |
| Finch/quail | ||||||
| Waterborne | 10/10 (100) | 6/6 (100) | − | − | 1/6 (17) quail | |
| Airborne | NA | NA | NA | NA | NA | |
| Chicken/finch | ||||||
| Waterborne | 6/6 (100) | 4/8 (50) | − | − | 1/8 (13) finch | |
| Airborne | NA | NA | NA | NA | NA | |
| Quail/finch | ||||||
| Waterborne | 6/6 (100) | 2/10 (20) | − | − | 0 | |
| Airborne | NA | NA | NA | NA | NA | |
*OP, oropharyngeal route; NA, not applicable; +, symptoms present; −, symptoms not present.
†Clinical signs or symptoms were observed at least once and included >1 of the following: hunched posture, ruffled feathers, and lethargy.
Page created: March 17, 2015
Page updated: March 17, 2015
Page reviewed: March 17, 2015
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