what are the main difference between Delta variant and Omicron
Omicron is a variant that has a faster rate of mutation than delta, which has caused havoc across the world. The totality of 50 mutations has been observed in Omicron of which 30 occurred in the spike protein. It is via this spike protein coronavirus allows for infiltrating to the body of the person. As a comparison, the coronavirus had 18 variants within the delta S Protein of Delta.
Complete Difference detail I found here: Delta VS Omicron | Main Differences Between Both Variants