Human Cases Public Health Concerns Transmission Risks Human Infection Risks Public Health Response Public Health Human Infections Pandemic Potential CDC Reports H7 Strain Outbreaks Zoonotic Transmission Pandemic Risk Transmission Human Health Implications Transmission Mechanisms Genetic Mutations Pediatric Cases D1.1 Strain Dairy Cows Human Infection Viral Transmission Farm Worker Bird Flu Transmission to Humans Raw Milk Vaccine Development Mammalian Infection Pandemic Preparedness Human Health Risks Transmission Routes