News Is 6 feet enough? CDC walks back its walkback on airborne transmission of COVID-19 September 21, 2020September 21, 2020 John Bacon, USA TODAY Comments Off on Is 6 feet enough? CDC walks back its walkback on airborne transmission of COVID-19 The CDC posted, then withdrew, an update saying six feet may not be sufficient and ventilation was key to easing transmission of COVID-19 indoors.