Wtf is this??? I’ve never heard of this publication and strongly suspect them to be a fake one. I don’t see a methods section, nor can I come up with any justification to use the most congested city in America, where it’s damn near impossible to contact trace for this type of study. On top of that, the science was pretty damn well settled that LIKE ALL RESPIRATORY VIRUS BEFORE COVID, ASYMPTOMATIC SPREAD IS NOT A THING. So, they’re going against all other studies out there. This publication really sounds like a gun for hire. Tell us what you want to say and we’ll throw together some data and graphs for you. Unfortunately there’s a lot of that out there these days.
Large-scale population screening can provide insights to levels of ongoing SARS-CoV-2 transmission. Here, the authors report a citywide screening of ~10,000,000 residents of Wuhan and show that SARS-CoV-2 infection prevalence was very low five to eight weeks after the end of lockdown.
www.nature.com
In summary, all the 455 contacts were excluded from SARS-CoV-2 infection and we conclude that the infectivity of some asymptomatic SARS-CoV-2 carriers might be weak.
pubmed.ncbi.nlm.nih.gov
PS. How’s that vaccine efficacy looking colfax