Vet discusses risk of avian flu for humans after man in Colorado tests positive

Since the avian flu was first detected in Minnesota in March, nearly 3 million birds are known to have been infected and subsequently destroyed. Officials have repeatedly said humans are at low risk, but a man in Colorado has tested positive for the virus.

Dr. Carol Cardona, professor and endowed chair in avian health at the University of Minnesota Department of Veterinary and Biomedical Sciences, spoke with host Cathy Wurzer about what this means for human transmission.