I'm sorry, can you be specific? What recommendations in this CDC document reflect science on which you feel there is significant uncertainty or disagreement?

I'm sorry, can you be specific? What recommendations in this CDC document reflect science on which you feel there is significant uncertainty or disagreement? This is almost all just straightforward isolation requirements. Social isolation as a disease prevention strategy has been practiced and studied for literally millenia. Yes, it's very much "scientific consensus". Sure, there are questions unanswered, and there always will be. I don't see how that's relevant to "keep your workers from getting too close and keep your air from circulating unfiltered among them".