Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
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 1

Virus isolation from organs of dead birds in an interspecies study of influenza A(H7N9) virus transmission*

Bird species Time of death, dpi Influenza virus exposure Transmission
Virus titer, log10 EID50/mL†
Route Direction Trachea and/or lung Intestine
Naive contact
Finch 4 A/Anhui/1/2013 (H7N9) Airborne Chicken → Finch 0 0
Finch 5 A/Anhui/1/2013 (H7N9) Waterborne Chicken → Finch 4.3 (combined) 0
Finch 5 A/chicken/Rizhao/867/2013 (H7N9) Waterborne Chicken → Finch 6.5 (combined) 0
Quail 15 A/Anhui/1/2013 (H7N9) Waterborne Finch → Quail 4.7 (trachea); 5.5 (lung) ND
Quail 15 A/Anhui/1/2013 (H7N9) Waterborne Finch → Quail 7.3 (trachea); 8.3 (lung) ND
A/chicken/Rizhao/867/2013 (H7N9)
Finch → Quail

6.5 (trachea); 7.5 (lung)
Finch 6 A/Anhui/1/2013 (H7N9) Waterborne Finch → Chicken 4.5 (combined) 0
Finch 2 A/Anhui/1/2013 (H7N9) Waterborne Finch → Quail 2.5 (trachea); 2.3 (lung) ND
Quail 15 A/Anhui/1/2013 (H7N9) Airborne Quail → Finch 3.3 (trachea); 4.5 (lung) ND

*dpi, days postinfection; EID50, 50% egg infectious dose; ND, not determined.
†Assessed in embryonated chicken eggs.

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.