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Volume 21, Number 4—April 2015

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†

Naive contact
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

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

*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
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