The parasite has a life cycle that passes through several stages. One of the stages involves infecting a mammal (and apparently mostly human) host. If you dis

The parasite has a life cycle that passes through several stages. One of the stages involves infecting a mammal (and apparently mostly human) host. If you disrupt that stage, you disrupt the life cycle of the parasite. If you disrupt that stage completely, no parasite continues to the next cycle and after a bit of time there isn't any more parasite.