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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 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.

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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