Gregg triad is a classical triad of rubella. It occurs in the infant of mother who was infected with rubella during pregnancy. The Gregg triad consists of: 1. deafness 2. cataract 3. cardiac anomalies Reference: https://www.slideshare.net/1154006056/congenital-rubella-syndrome-73974086 Image via: https://www.ijpd.in/article.asp?issn=2319-7250;year=2016;volume=17;issue=3;spage=229;epage=231;aulast=Makadia