Keep your chicks away from the older ones until the pox has gone away, since the scabs and direct contact can help spread the virus. Do not disturb scabs. Pox usually lasts about 3 weeks, but it can slowly spread from bird to bird in the flock. Dry pox is usually not serious, but sometimes they can get wet pox which involves yellow patches inside the throat and airway. Wet pox is very serious, and chicks can be affected worse with either type.