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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. WebsterComments to Author 
Author affiliations: St. Jude Children’s Research Hospital, Memphis, Tennessee, USA

Main Article

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.

Main Article

Page created: March 17, 2015
Page updated: March 17, 2015
Page reviewed: March 17, 2015
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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