My understanding was that this virus has a molecular proofreading system that reduces its mutation rate, and makes it unlikely to develop a more deadly strain -

My understanding was that this virus has a molecular proofreading system that reduces its mutation rate, and makes it unlikely to develop a more deadly strain - was this dispelled in any way? Can't find exactly where I read it but it's e.g. mentioned here: https://www.statnews.com/2020/02/04/two-scenarios-if-new-coronavirus-isnt-contained/ https://www.statnews.com/2020/02/04/two-scenarios-if-new-cor...