(Tillamook, OR) -- Officials say bird flu has been detected in two private flocks of 60 chickens and ducks in Tillamook County. The flock owners didn't sell eggs or other poultry products, so a quarantine isn't required. The birds were euthanized and won't enter the food system. These are the first cases of bird flu in Tillamook County. The virus was previously detected in Coos, Deschutes, Lane, Linn and Polk counties. Bird flu is highly contagious among birds, but it's not believed to be a major threat to people.