Locations infected with by Haplosporidium nelsoni (Multinucleate Sphere X disease) in 2012

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: 2012-12-31

Date confirmed	Location	Animal type infected	Scientific Name
December 19	Nova Scotia	American oyster	Crassostrea virginica
July 20	Nova Scotia	American oyster	Crassostrea virginica