The Oxford Comma, A Confounding Bit of Punctuation

You may know it's a style choice to use an Oxford comma before the final "and" in a series ("red, white, and blue"), but do you know what to do when you use an ampersand instead of the word "and"? I didn't, so I looked it up! I won't leave you in suspense: you don't use the comma. Pass it on. | Grammar Girl

Comma (,) When to Use a Comma with Important Comma Rules • 7ESL