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Locations infected with by Haplosporidium nelsoni (Multinucleate Sphere X disease)

Haplosporidium nelsoni causes Multinuclear Sphere X (MSX) disease in cultured and wild American oysters (Crassostrea virginica).

MSX is a federally reportable disease listed in the Reportable Diseases Regulations. This means that all suspect cases of the disease or detections of the pathogen must be reported to the CFIA.

Current as of: 2022-10-31

Locations affected by Haplosporidium nelsoni in Canada in 2014
Year Date confirmed Location Animal type infected Scientific Name
2016 May 3 Nova Scotia American oyster Crassostrea virginica
2014 August 8 Nova Scota American oyster Crassostrea virginica
2013 September 13 Nova Scotia American oyster Crassostrea virginica
2013 September 6 Nova Scotia American oyster Crassostrea virginica
2013 July 26 British Columbia Pacific cupped oyster Crassostrea gigas
2013 June 3 Nova Scotia American oyster Crassostrea virginica
2012 December 19 Nova Scotia American oyster Crassostrea virginica
2012 July 20 Nova Scotia American oyster Crassostrea virginica
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