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Animal and Plant Health Inspection Service
U.S. Department of Agriculture
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Low Pathogenicity Avian Influenza (LPAI)

Low pathogenicity avian influenza (LPAI) viruses typically cause little or no clinical signs in infected poultry. The LPAI virus is excreted through infected birds’ feces and respiratory secretions. It spreads primarily through direct contact between healthy and infected birds. It can also be spread through indirect contact with contaminated equipment and materials.

To prevent cases of LPAI, poultry producers must use special preventative measures and precautions on the farm. If LPAI is detected, farms must be thoroughly cleaned and disinfected. AI viruses are inactivated by heat and drying. They are also very sensitive to most disinfectants and detergents. To ensure thorough disinfection, organic material must first be cleaned from the environment.

When LPAI findings occur, APHIS and its state partners work to address them quickly and keep the disease from spreading to new flocks. Because LPAI does not typically kill poultry the way that HPAI does, there may be additional control options beyond depopulation.  Federal and state officials will work with producer to determine what option(s) are available.

Past LPAI Findings

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