Tap to download the app
You are currently viewing the US Edition of Poultry Health Today. Click below to switch to the Global Edition or VFD News Center.
NEXT
CLOSE

Sponsored By Zoetis

.

Print

Isolates implicate humans in rapid spread of HPAI

A recent analysis of the viral isolates from all outbreaks of highly pathogenic avian influenza (HPAI) in North America points to humans and farm equipment as the leading carriers of the disease from farm to farm.

Dr. David Swayne, director, U.S. National Poultry Health Research Center, said that clusters of farms that have identical avian influenza isolates are a likely indication of farm-to-farm transmission of the virus.

Dr. David Swayne, director, U.S. National Poultry Health Research Center, said that clusters of farms that have identical avian influenza isolates are a likely indication of farm-to-farm transmission of the virus.

This finding is based on clusters of farms with identical HPAI isolates that suggest farm-to-farm transmission, said David Swayne, DVM, PhD, laboratory director at Southeast Poultry Research Laboratory, USDA Agricultural Research Service, as reported on WattAgNet.

Speaking to the International Conference on Avian Influenza and Poultry Trade, Swayne said that the anticipated HPAI outbreak in the Atlantic flyway this fall could replicate the unique scenario of the virus passing from waterfowl to poultry and back to waterfowl. These waterfowl then have the ability to carry a novel influenza virus when they return to their North American winter homes in the fall of 2015, similar to a recent Korean outbreak.

Introduction of HPAI from wild birds to domestic poultry began on the West Coast of the US and spread to the Midwest, where it claimed nearly 50 million head of poultry. The HPAI virus was highly pathogenic for poultry — but not waterfowl — allowing waterfowl to carry the virus without illness but still shed it continuously, spreading the disease along traditional flyway routes. The unique reassortment of the highly pathogenic Asian virus and the low-pathogenic North American viruses contributed to its virulence in domestic poultry.

WATTAgnet_globe

Full article at WattAgNet

The current worldwide outbreak of avian influenza is the largest in 50 years with more than 41 countries reporting outbreaks since 2012. Thirty-eight of these — or 76% — are tied to a virus that originated in a goose in Guangdong province of China in 2012.

Full article

 


tags: , ,
RELATED NEWS

Google Translate is provided on this website as a reference tool. However, Poultry Health Today and its sponsor and affiliates do not guarantee in any way the accuracy of the translated content and are not responsible for any event resulting from the use of the translation provided by Google. By choosing a language other than English from the Google Translate menu, the user agrees to withhold all liability and/or damage that may occur to the user by depending on or using the translation by Google.