Sentence Correction (SC) | Re: Arteriviruses are a genus of microorganisms that cause digestive and r

Hi Experts,GMATNinja ,GMATNinjaTwo ,mikemcgarry ,

In option B, is the parallelism correct in the "in humans and other mammals, and in birds"

I believe since humans are mammals, this parallelism makes more sense.

Please confirm if "in X and Other X's, and in Y's" is correct in the placement of comma before the second and

Thanks