“Unfortunately an early draft of a revision went up without any technical review,” said Jay Butler, the CDC’s deputy director for infectious diseases. “We are returning to the earlier version and revisiting that process. It was a failure of process at CDC.”…

Although CDC officials maintained Friday’s post was a mistake, Democratic lawmakers were incredulous. Rep. Raja Krishnamoorthi (D-Ill.) tweeted Monday afternoon that he would investigate why the language to airborne transmission had been scrubbed…

“Airborne transmission is plausible and, I would say, possible,” Butler said. But he said data do not suggest the coronavirus is spread primarily through the air, unlike diseases such as tuberculosis.

Butler said the Friday guidance, released in error, overstated the agency’s stance on airborne spread. “If I did not know any better, I would think that we were saying that airborne transmission is very important, if not the main mode of transmission,” he said. “That does not reflect our current state of knowledge.”