Journal article

Investigation of systemic isosporosis outbreaks in an aviary of greenfinch (Carduelis chloris) and goldfinch (Carduelis carduelis) and a possible link with local wild sparrows (Passer domesticus)

Matthew Colin Gosbell, Olusola Martins Olaogun, Kathy Hin Yue Luk, Amir H Noormohammadi



CASE REPORT: An outbreak of systemic isosporosis caused mortalities in greenfinches (Carduelis chloris) and goldfinches (Carduelis carduelis) kept in an aviary in the western suburbs of Melbourne. The following year, a further outbreak in the same aviary occurred in a different flock of goldfinches. At the time of the second outbreak, dead and sick common sparrows (Passer domesticus) discovered near the aviary were also found to have systemic isosporosis. METHOD: The systemic isosporosis was investigated and described using histopathology, electron microscopy and sequence analysis of the 18s gene. RESULTS: Isospora spp. infecting the greenfinch and the goldfinch caused significant thickening..

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Funding Acknowledgements

Funding to conduct this project was provided by Association of Avian Veterinarians Australasian committee (AAVAC) and the Asia Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, Melbourne University. The authors thank Professor Jan Slapeta, Sydney School of Veterinary Science, the University of Sydney, for commenting on the electron microscopy images.