he Wet Form: Chickens affected with the wet form of Fowl Pox will also develop lesions. These lesions will typically affect the inside of an infected bird’s mouth, throat and trachea or on the conjunctiva of a bird’s eye. A chicken’s trachea may appear reddened and inflamed. The wet form is the more serious form of the two due to the fact that as the lesions grow and develop they may block air coming into the trachea causing suffocation. Also, birds may not be able to eat or drink causing eventual death.How to tell if it’s wet pox?
Dry pox usually runs it's course in several weeks with no real issues unless a bird is in a weakened condition. Birds usually survive dry pox. Wet pox is much more serious, and is also less common. It's best to leave the blisters/lesions alone, messing with them can spread the virus. Keeping things clean, especially feeders and waterers can help prevent the spread. Monitor them to make sure they are eating and drinking normally. If you are in an area where mosquitos are prevalent then putting window screen over all your coop openings can help prevent them from being bitten at night while roosting, which can decrease your incidence. I put screen over the door also, cut in strips that hang down loose, so the birds can still go in and out, but not the mosquitos. There are lots of articles on pox, here is one: