I had Dry and Wet Pox go thru my flock last October 2008 and it lasted for over 2 months had my last case in December 2008.
It spread very slowly and it infected about 40 chickens i wanted it to stop so to protect the rest of my flock i vaccinated 50 chickens to stop the spread.
Lost 6 chickens to wet pox
This is Dry Pox and it doesn't really affect a chicken and you can treat the pox with iodine and it helps them to dry faster.
But watch and remove any that cover their eyes because the pox may grow into their eyes blinding them.
I just used a Q'tip and dotted it on the pox and it really seemed to help
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This is Wet Pox and this Rooster had it growing on his Tongue it's important to remove these or they will continue to grow and suffocate the chicken and they can not eat or drink with these growths in their throat.
I used a Q'tip dipped in iodine to remove them then i swabbed their throats with the iodine they are very easily removed but remember this is very painful to the chicken be gentle and stop if they show signs of it just being to much.
I had a Rooster pass out it was so painful.
This Hen is sitting very still because she has Wet Pox and can't eat or drink I almost lost her to the Wet Pox but she is still around a year later.
I wanted to add this Hen never had the Dry Pox she came down with the Wet Pox and never had the wart like sores on her comb.
You can see the iodine stain around her beak from me swabbing her throat.