New avian influenza sampling method saves money

Mar 04, 2014 by Sandra Avant
Credit: Stephen Ausmus

A number of poultry industry groups are using a less costly method to collect avian influenza virus samples, thanks to U.S. Department of Agriculture (USDA) scientists.

Avian influenza is a foreign disease that infects and other bird species. Viruses identified as highly pathogenic cause severe disease, killing more than 90 percent of infected birds. Low pathogenic viruses are not as severe, but can cause sickness in birds as well as financial losses.

At the Agricultural Research Service's (ARS) Southeast Poultry Research Laboratory (SEPRL) in Athens, Ga., scientists conduct studies not only to identify various strains, but also to determine their origin and whether current tests and vaccines are effective against them. In addition, the scientists investigate the best methods for collecting from poultry for testing.

In the United States, all meat chickens and turkeys must be tested for avian influenza before processing. Sample collection is an important component of this process.

A certain number of swab samples, taken from inside the birds' mouths, are needed per flock to get a reasonable virus sample, according to microbiologist Erica Spackman, who works in SEPRL's Exotic and Emerging Avian Viral Diseases Research Unit. The current method used to determine if virus is present works well, but requires placing only one to five swab samples in a tube.

Spackman found that improvements could be made by switching the type of swab used and increasing the number or swabs in each tube. As many as 11 swab samples can be pooled together in a single tube without inhibiting or affecting the sensitivity of the test used to detect virus. In addition, Spackman demonstrated that this method can be used to collect Newcastle disease virus samples. The process reduces the amount of tubes needed and, more importantly, the number of individual tests that are run, which decreases the cost to poultry producers.

This research, which was published in BioMed Central Veterinary Research in 2013, supports the USDA's priority of promoting international food security.

Explore further: Chinese scientists report first human death associated with new bird flu virus

add to favorites email to friend print save as pdf

Related Stories

FDA approves H5N1 avian influenza vaccine

Nov 26, 2013

(HealthDay)—The U.S. Food and Drug Administration has approved the first adjuvanted vaccine for the prevention of H5N1 influenza in adults at greater-than-average risk of exposure.

Recommended for you

Saving seeds the right way can save the world's plants

2 hours ago

Exotic pests, shrinking ranges and a changing climate threaten some of the world's most rare and ecologically important plants, and so conservationists establish seed collections to save the seeds in banks ...

Sugar mimics guide stem cells toward neural fate

3 hours ago

Embryonic stem cells can develop into a multitude of cells types. Researchers would like to understand how to channel that development into the specific types of mature cells that make up the organs and other structures of ...

Chinese mosquitos on the Baltic Sea

3 hours ago

The analysis of the roughly 3,000 pieces is still in its infant stage. But it is already evident that the results will be of major significance. "Amazingly often, we are finding–in addition to Asian forms–the ...

User comments : 0