My chickens have an upper resiptory disease. i am treating them as a closed flock for now and will cull late spring/early summer. just using them for eating eggs. When i cull i will send off 2 or 3 birds to get tested. I want to plan on getting eggs to hatch after this but have googled for information on how long the coop and runs etc have to be empty for each disease and have not been able to find any information about it. anyone know what the time line is for MG and ILT for the diseases not to be present in surroundings anymore? Thanks for the help.