Global National June 23 2021 9:13pm 02:03 What scientists know about new ‘Delta Plus’ variant of concern Scientists have identified another COVID-19 variant of concern, called Delta Plus. So how dangerous or contagious is this mutation, which is related to the Delta variant? Redmond Shannon reports. The Delta COVID-19 variant has a mutation called K417N. Here’s what we know REPORT AN ERROR Responsive site?