ANNAPOLIS, MD (January 14, 2025) ~ The Maryland Department of Agriculture has confirmed a second case of highly pathogenic H5N1 avian influenza (HPAI) in the state. The case was detected during routine sampling of a broiler farm in Queen Anne's County. This comes just four days after a presumptive positive was found at a commercial poultry farm in Caroline County.

According to state officials, there are now four confirmed cases of HPAI in the Delmarva region, including two premises in Kent County, Delaware. All affected premises have been quarantined and birds on the properties are being or have been depopulated to prevent the spread of the disease. It is important to note that birds from affected flocks will not enter the food system.

The U.S. Department of Agriculture's National Veterinary Services Laboratory is currently conducting tests to confirm the presence of HPAI on these farms. Final results are expected in the coming days.

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Avian influenza is a highly contagious respiratory virus that can easily spread among birds through nasal and eye secretions, as well as manure. The virus can be transmitted between flocks through various means, including contact with infected poultry, wild birds, equipment, and even on the clothing and shoes of caretakers. This virus primarily affects poultry such as chickens, ducks, and turkeys, but can also impact some wild bird species like ducks, geese, shorebirds, and raptors.

While there is a low risk of transmission between birds and humans, those who work directly with poultry or dairy farms may be more at risk. The Maryland Department of Health advises individuals to follow key biosecurity practices to minimize their risk of exposure.

The department continues to urge commercial chicken growers and backyard flock owners to enhance their biosecurity practices and familiarize themselves with what to do if HPAI is suspected in their flock. The U.S Centers for Disease Control and Prevention also provides guidance on this matter.

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Some key biosecurity practices include regularly checking for signs of illness in birds, promptly reporting any suspected cases of HPAI to the Maryland Department of Agriculture, and limiting visitors to poultry areas. It is also important to clean and disinfect transportation, remove loose feed to prevent wild birds from being attracted to the area, and provide disposable boot covers or footbaths for anyone coming into contact with the flock.

Visitors should also wear protective outer garments or disposable coveralls, boots, and headgear when handling birds and shower or change clothes before leaving the facility. Additionally, tools and equipment should be cleaned and disinfected before being moved to a new poultry facility.

For more information on avian influenza and how to prevent its spread, visit the Maryland Department of Agriculture's website. Due to biosecurity concerns, no on-site interviews, photos, or videos are allowed at this time. All media requests can be directed to jessica.hackett2@maryland.gov.

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