https://www.canada.ca/fr/sante-publique/services/rapports-publications/releve-maladies-transmissibles-canada-rmtc/numero-mensuel/2019-45/numero-11-7-novembre-2019/article-4-corynebacterium-diphtheriae-canada-2006-2019.html 2019 Canada journal article detective corynebacterium diphtheriae Congenital pit of the optic disc due to corynebacterium diphtheriae Intercondylar fracture of the humerus canada