She mingles with other chickens that do and there are insects and wild birds to consider that also can be carriers.This pullet is five months old and has not spent any significant time free ranging.
Ever since I changed my deworming routine and started to deworm the chicks early, the overall health and vitality of my youngsters increased significantly, and it has reduced their susceptibility to coccidia and other diseases.
Depending on the medication you choose, it is easy to do, has no adverse effects and is quite cheap as well.