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The studies the morphology, pathology, and prevalence of Klossiella quimrensis (Apicomplexa) by researchers in Western Australia. The researchers diagnosed klossiellosis by histology of renal tissue collected during necropsy of 20 Perameles bougainville. It was found out that the infection is indirectly associated with mild multifocal interstitial lymphocystic nephritis and is likely to be only minimally pathogenic in otherwise healthy individuals.

Cryptosporidiosis is an enteric disease of animals and humans that can be fatal in immunocompromised individuals. There is no known effective treatment for cryptosporidiosis. Bilbies are threatened marsupials and are bred in captivity as part of a recovery program to re-introduce this species to the southwest of Western Australia. Cryptosporidium muris infection was detected in the faeces of bilbies at a captive breeding colony. Stress associated with a high density of bilbies in enclosures may have predisposed some of the bilbies to infection with C. muris. C. muris has been described in mice and was found in the faeces of one mouse trapped in the breeding enclosures. It is likely the bilbies acquired the infection from mice by faecal contamination of food and water. The infection cleared within 2 months from some bilbies, however others remained infected for 6 months and treatment was attempted with dimetridazole. Subsequently the parasite was no longer be detectable in the faeces.