M. cerebralis yakatanga kuwanikwa muNew Zealand muna 1971. M. cerebralis yakawanikwa chete mumvura dziri muSouth Island, kure nenzvimbo dzinokosha dzekurima mvura. Uyezve, salmonid species dzinotengeswa mumvura muNew Zealand dzine hutachiona hwakaderera hwekurwara kwechirwere, uye parasite haina kuratidzwawo kuti inokanganisa salmonids yemuno. Chimwe chinhu chakakosha chisingabatsiri chekuvapo kwechirwere ichi ndeyekurambidzwa kwekurambidzwa kunoiswa kune zvigadzirwa zve salmon kuAustralia. Mubvunzo: M. cerebralis iri munzvimbo dzipi?
nzizi dziri muSouth Island