Articles | Volume 21, issue 17
 | Highlight paper
02 Sep 2021
Opinion | Highlight paper |  | 02 Sep 2021

Opinion: The germicidal effect of ambient air (open-air factor) revisited

R. Anthony Cox, Markus Ammann, John N. Crowley, Paul T. Griffiths, Hartmut Herrmann, Erik H. Hoffmann, Michael E. Jenkin, V. Faye McNeill, Abdelwahid Mellouki, Christopher J. Penkett, Andreas Tilgner, and Timothy J. Wallington


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-375', Anonymous Referee #1, 31 May 2021
  • RC2: 'Comment on acp-2021-375', Anonymous Referee #2, 17 Jun 2021
  • CC1: 'Comment on acp-2021-375', Richard Hobday, 02 Jul 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Markus Ammann on behalf of the Authors (06 Aug 2021)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (09 Aug 2021) by Ronald Cohen
ED: Publish as is (09 Aug 2021) by Barbara Ervens (Executive editor)
AR by Markus Ammann on behalf of the Authors (10 Aug 2021)
Short summary
The term open-air factor was coined in the 1960s, establishing that rural air had powerful germicidal properties possibly resulting from immediate products of the reaction of ozone with alkenes, unsaturated compounds ubiquitously present in natural and polluted environments. We have re-evaluated those early experiments, applying the recently substantially improved knowledge, and put them into the context of the lifetime of aerosol-borne pathogens that are so important in the Covid-19 pandemic.
Final-revised paper