STATE COLLEGE, Pa. — A disease outbreak in Virginia’s top poultry region this spring has a veterinarian concerned about a resurgence this fall and winter.

Infectious laryngotracheitis, which thrives in damp conditions, hit a number of farms in the Shenandoah Valley from April to June.

What Would a U.S. Avian Influenza Vaccination Program Entail?

Vaccinating against avian influenza would be a costly, multistep process, said C arol Cardona, a University of Minnesota veterinary professor.

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