Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

Volume 14, Number 10—October 2008

Letter

Detecting Avian Influenza Virus (H5N1) in Domestic Duck Feathers

Yu YamamotoComments to Author , Kikuyasu Nakamura, Masatoshi Okamatsu, Ayako Miyazaki, Manabu Yamada, and Masaji Mase
Author affiliations: National Institute of Animal Health, Tsukuba, Japan;

Main Article

Table

Results of virus isolation and RT-PCR in 3 domestic ducks inoculated with influenza A virus (H5N1)*

dpi Virus titer (RT-PCR result)†
Duck a
Duck b
Duck c
F O C F O C F O C
2 4.2† (+)‡ 2.0 (+) – (–) 1.7 (+) 1.7 (+) – (+) 2.8 (+) 2.0 (+) 1.7 (–)
3 6.9 (+) 2.7 (+) – (–) 4.5 (+) 3.0 (+) 2.5 (+) 4.8 (+) 1.7 (+) 2.8 (–)
4 6.8 (+) 3.7 (+) 1.7 (–) 2.3 (+) 3.5 (+) 1.7 (–) 4.8 (+) 3.3 (+) – (–)
5 6.5 (+) – (+) – (–) 1.7 (+) – (+) – (–) 2.5 (+) 1.7 (+) – (–)
6 5.6 (+) – (+) – (–) – (–) – (–) – (–) 4.0 (+) – (–) – (–)
7 3.8 (+) – (–) – (–) – (–) – (–) – (–) – (–) – (–) – (–)
8 5.8 (+) – (–) – (–) – (–) – (–) – (–) – (+) – (–) – (–)
9 – (–) – (–) – (–) – (–) – (–) – (–) – (–) – (–) – (–)
10 – (–) – (–) – (–) – (–) – (–) – (–) – (–) – (–) – (–)

*RT-PCR, reverse transcription–PCR; dpi, days postinoculation; F, feathers; O, oropharyngeal swabs; C, cloacal swabs.
†Virus titer expressed as 50% egg infectious doses per mL; –, negative for virus isolation. RT-PCR result: +, positive; –, negative.

Main Article

Top of Page

USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO