Avian Diseases Bird Flu Outbreaks Bird Flu Impact Disease Outbreaks Disease Management Avian Influenza Dairy Farming Biosecurity Measures Biosecurity Bird Flu Disease Control Cattle Farming Disease Surveillance Infectious Diseases Dairy Cattle Disease Prevention Bird Flu Management Bird Flu Risks Vaccination Strategies Bird Markets Vaccine Development
Experts investigate whether the decline reflects natural seasonality, reduced surveillance, or undetected infections among at-risk groups.