We have to get to trying vaccination soon. Enclosing chickens without fresh air is not the answer, mass production and use of the vaccine is a possible one. Who cares if other countries won't eat the chickens then. Without some solution there may not be any for them to eat at all some day
Soon they will be recommending small enclosed boxes for them so they can't breathe or even see another chicken. It's disgusting how people see chickens as less than worthy of compassion.
And if one more person complains about the cost of eggs because chickens don't have to live in cages I'm going to put them in one. Eat something else then.