Volume 12, Number 4, April 2006

Domestic Ducks and H5N1 Influenza Epidemic, Thailand

Thaweesak Songserm,* Rungroj Jam-on,* Numdee Sae-Heng,* Noppadol Meemak,† Diane J. Hulse-Post,‡ Katharine M. Sturm-Ramirez,‡ and Robert G. Webster‡
*Kasetsart University, Nakornpathom, Thailand; †Western Veterinary Research and Development Center, Rachaburi, Thailand; and ‡St. Jude Children's Research Hospital, Memphis, Tennessee, USA

Figure 2. Example of grazing-duck movement. A single flock of ducks was moved 3 times by truck in 1 season in 2004. The size of the flock is 3,000–10,000. The time spent at each site depends on the availability of rice fields at the site: an acre of rice could support 3,000 ducks for 1 to 2 days. The duck owners have agreements with the landowners regarding the time of harvest and the acreage available. One flock could spend as long as 1 month at a single site before being moved to the next.

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This page last reviewed March 22, 2006

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
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