Tuesday 17 March 2020

We estimate 86% of all infections were undocumented.....

We estimate 86% of all infections were undocumented (95% CI: [82%–90%]) prior to 23 January 2020 travel restrictions. Per person, the transmission rate of undocumented infections was 55% of documented infections ([46%–62%]), yet, due to their greater numbers, undocumented infections were the infection source for 79% of documented cases.
Substantial undocumented infection facilitates the rapid dissemination of novel coronavirus (SARS-CoV2) li et al, Science 16 Mar 2020:

No comments: