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H5N1 HPAI Layer Chicken Farm Cecil County Maryland


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The United States Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the presence of highly pathogenic avian influenza (HPAI) in a flock of commercial layer chickens in Cecil County, Maryland. 

https://www.aphis.usda.gov/aphis/newsroom/stakeholder-info/sa_by_date/sa-2022/hpai-md

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USDA Confirms Highly Pathogenic Avian Influenza in a Flock of Commercial Layer Chickens in Maryland

Published: Mar 5, 2022

photo of commercial flock of chickens
Contacts:
[email protected]   

WASHINGTON, March 5, 2022 – The United States Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the presence of highly pathogenic avian influenza (HPAI) in a flock of commercial layer chickens in Cecil County, Maryland. 

Samples from the flock were tested at the University of Delaware’s Allen Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories (NVSL) in Ames, Iowa.

APHIS is working closely with state animal health officials in Maryland on a joint incident response. State officials quarantined the affected premises, and birds on the property will be depopulated to prevent the spread of the disease. Birds from the flock will not enter the food system.   

According to the U.S. Centers for Disease Control and Prevention, the recent HPAI detections do not present an immediate public health concern.  No human cases of these avian influenza viruses have been detected in the United States.  As a reminder, the proper handling and cooking of poultry and eggs to an internal temperature of 165 ˚F kills bacteria and viruses.

As part of existing avian influenza response plans, Federal and State partners are working jointly on additional surveillance and testing in areas around the affected flock. The United States has the strongest AI surveillance program in the world, and USDA is working with its partners to actively look for the disease in commercial poultry operations, live bird markets and in migratory wild bird populations. 

Anyone involved with poultry production from the small backyard to the large commercial producer should review their biosecurity activities to assure the health of their birds. APHIS has materials about biosecurity, including videos, checklists, and a toolkit available at https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/avian/defend-the-flock-program/dtf-resources/dtf-resources   

USDA will report these findings to the World Organisation for Animal Health (OIE) as well as international trading partners. USDA also continues to communicate with trading partners to encourage adherence to OIE standards and minimize trade impacts. OIE trade guidelines call on countries to base trade restrictions on sound science and, whenever possible, limit restrictions to those animals and animal products within a defined region that pose a risk of spreading disease of concern.  

APHIS will continue to announce the first case of HPAI in commercial and backyard flocks detected in a State but will not announce subsequent detections in the State.  All cases in commercial and backyard flocks will be listed on the APHIS website at https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/avian/avian-influenza/2022-hpai 

In addition to practicing good biosecurity, all bird owners should prevent contact between their birds and wild birds and report sick birds or unusual bird deaths to State/Federal officials, either through their state veterinarian or through APHIS’ toll-free number at 1-866-536-7593. APHIS urges producers to consider bringing birds indoors when possible to further prevent exposures. The Animal Health Protection Act authorizes APHIS to provide indemnity payments to producers for birds and eggs that must be depopulated during a disease response. APHIS also provides compensation for disposal activities and virus elimination activities.  Additional information on biosecurity for backyard flocks can be found at http://healthybirds.aphis.usda.gov.

Additional background
Avian influenza (AI) is caused by an influenza type A virus which can infect poultry (such as chickens, turkeys, pheasants, quail, domestic ducks, geese, and guinea fowl) and is carried by free flying waterfowl such as ducks, geese and shorebirds. AI viruses are classified by a combination of two groups of proteins: hemagglutinin or “H” proteins, of which there are 16 (H1–H16), and neuraminidase or “N” proteins, of which there are 9 (N1–N9). Many different combinations of “H” and “N” proteins are possible. Each combination is considered a different subtype and can be further broken down into different strains which circulate within flyways/geographic regions. AI viruses are further classified by their pathogenicity (low or high)—the ability of a particular virus strain to produce disease in domestic poultry.

 


 

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Highly Pathogenic Avian Influenza Confirmed in Cecil County

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Maryland Poultry Growers Advised to Take Precautions

remsberg_0810290006_lr.jpg?resize=488%2C
Photo Credit: Edwin Remsberg

 

ANNAPOLIS, MD — Federal laboratory testing has confirmed a case of highly pathogenic H5N1 avian influenza (HPAI) on a Maryland poultry farm. Following an investigation by the Maryland Department of Agriculture (MDA), the United States Department of Agriculture (USDA) National Veterinary Services Laboratory confirmed a Cecil County sample tested positive for HPAI. The Maryland case comes one week after a HPAI positive in Delaware.

Following the Delaware case, Maryland and its federal and state partners have greatly expanded their surveillance sampling and testing regimen to better protect the poultry industry on the Delmarva Peninsula. To prevent the spread of the virus, depopulation of the affected birds has begun in Cecil County; nothing from the facility will enter the supply chain. The index farm is under a strict quarantine; only authorized personnel will be allowed on the premise.

“Avian influenza does not affect poultry meat or egg products, which remain healthy and safe to eat and handle. All poultry growers, operators, and owners, including those who manage backyard flocks, must remain vigilant,” said Maryland Agriculture Secretary Joe Bartenfelder. “MDA, USDA and other partner agencies are working diligently to address and localize the situation, including quarantining and testing nearby flocks.”

Avian influenza is a highly contagious airborne respiratory virus that spreads easily among birds through nasal and eye secretions, as well as manure. The virus can be spread in various ways from flock to flock, including by wild birds, through contact with infected poultry, by equipment, and on the clothing and shoes of caretakers. This virus affects poultry, like chickens, ducks, and turkeys, along with some wild bird species such as ducks, geese, shorebirds, and raptors. It has appeared sporadically over the last several decades in bird populations throughout the globe. Wild birds can carry the virus without becoming sick, while domesticated birds can become very sick. HPAI is not a public health concern.

Maryland growers should take the following precautions to protect their flocks:

  • Restrict access to poultry by posting “Restricted Access” signage, securing the area with a locked gate, or both.

  • Ensure that contaminated materials on the ground are not transported into the poultry growing house or area.

  • Provide the following items to anyone entering or leaving any area where poultry are kept:

    • Footbaths and foot mats with disinfectant;

    • Boot washing and disinfectant station; and

    • Footwear change or foot covers.

  • Cover and secure feed to prevent wild birds, rodents, or other animals from accessing it.

  • Cover and properly contain used litter, or other disease-containing organic materials to prevent wild birds, rodents, or other animals from accessing them, and keep them from being blown around by the wind.

  • Allow MDA to enter the premises during normal working hours to inspect your biosecurity and sanitation practices. Maintain a log of those who access egg and poultry houses.

  • Report any unusual or sudden increases in sick birds to the MDA Animal Health Program at 410-841-5810 or 410-841-5971. Also contact the USDA at 866-536-7593.

  • Read up about HPAI and biosecurity measures on the MDA website.

Commercial chicken growers, backyard flock owners can email questions about the outbreak to [email protected]. In addition, the USDA’s Defend the Flock website has information on ways to help mitigate the risk of avian influenza, including instructional videos, additional biosecurity measures, and photos that show the signs of illness. Please visit the department’s Avian Flu website for more information on avian influenza.

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Follow Maryland Department of Agriculture on Twitter @MdAgDept

https://news.maryland.gov/mda/press-release/2022/03/05/highly-pathogenic-avian-influenza-confirmed-in-cecil-county/

 

 

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