The Avian Flu outbreak of 2015 struck poultry farmers in various states across the United States, costing billions of dollars and thousands of jobs due to the destruction. Despite the vast amount of planning and preparation by the United States Department of Agriculture (U.S.D.A.) and Department of Homeland Security, the avian flu continues to threaten farmers. Many of the preparations made work most effectively when the avian flu is detected first in wild bird populations but can come too late when the first detection happens in domesticated birds.
The source article does an excellent job explaining the challenges of detection for researchers, and resolution for farmers once detected, and continued dangers the avian flu presents to the economy.