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 13, Number 11—November 2007
Research

Role of Terrestrial Wild Birds in Ecology of Influenza A Virus (H5N1)

Adrianus C.M. Boon*1, Matthew R. Sandbulte*1, Patrick Seiler*, Richard J. Webby*, Thaweesak Songserm†, Yi Guan‡, and Robert G. Webster*Comments to Author 
Author affiliations: *St Jude Children's Research Hospital, Memphis, Tennessee, USA; †Medicine Kasetsart University, Nakorn Pathom, Thailand; ‡University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China;

Main Article

Table 1

Influenza A virus titers in oropharyngeal and cloacae swabs of infected birds*

Species
Virus
Mortality rate, %
Virus titer (EID50/mL) in swabs from infected animals
Day 2
Day 4
Day 6
T C T C T C
Sparrow
A/DK/TH/144/05 100 2.4 1.7 4.7 4.1 –†
A/Q/TH/551/05 100 1.0 <1 1.5 1.3 3.1 1.0
A/CM/HK/645/06 66 2.6 0.8 2.3 2.1 1.6 1.1
A/JW/HK/1038/06
100
2.1
<1

2.7
3.3



Day 2
Day 4
Day 6
T
C
T
C
T
C
Starling
A/DK/TH/144/05 0 3.8 0.8 3.3 <1 2 <1
A/Q/TH/551/05 0 ND ND ND ND ND ND
A/CM/HK/645/06 0 3.3 0.8 3.6 1 1.7 1.5
A/JW/HK/1038/06
0
2.5
1

2
<1

1.8
<1
Day 3
Day 5
Day 7
T
C
T
C
T
C
Pigeon A/DK/TH/144/05 0 <1 <1 <1 <1 <1 <1
A/Q/TH/551/05 0 <1 0.5 0.8 <1 <1 <1
A/CM/HK/645/06 0 1.9 <1 1.4 <1 <1 <1
A/JW/HK/1038/06‡ 0 0.5 <1 0.4 <1 <1 <1

*EID50, 50% egg infectious dose; T, oropharyngeal swab; C, cloacal swab; ND, not done.
†Birds did not survive the infection.
‡Swabs were taken on days 3, 6, and 10 after infection.

Main Article

1These authors contributed equally to the study.

Page created: July 05, 2010
Page updated: July 05, 2010
Page reviewed: July 05, 2010
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.
file_external