Effective May 1, 2018 “Reportable Diseases” are now referred to as “Diseases of Public Health Significance” under the consolidated O.Reg. 135/18 ‘Designation of Diseases’, which replaces O.Reg. 559/91: ‘Specification of Reportable Diseases’.

Other notable changes effective May 1, 2018 include the addition of Blastomycosis, Carbapenamase-producing Enterobacteriaceae (CPE) colonization or infection, and Echinoccoccus multiocularis infection, and the deletion of Malaria and Yellow Fever. “Haemophilus influenza b disease, invasive” has been changed to “Haemophilus influenza disease all types, invasive”, and outbreaks in public hospitals are now included in respiratory infection and gastroenteritis outbreaks in institutions.