How many infectious people are likely to show up at an event?
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Stephen Kissler and Yonatan Grad launched a Shiny app,
to help you answer the question,
How many infectious people are likely to show up to an event, given a screening test administered n days prior to the event?
Here’s a screenshot.
The app is based on some modeling they did with Stan followed by simulation-based predictions. Here’s the medRxiv paper.
Stephen M. Kissler et al. 2020. SARS-CoV-2 viral dynamics in acute infections. medRxiv.
Users input characteristics of the test taken, the event size, the time the tests are taken before the event, the duration of the event itself, etc. The tool then produces plots of expected number of infectious people at your event and even the projected viral load at your event with uncertainties.
This obviously isn’t a tool for amateurs. I don’t even understand the units Ct for the very first input slider; the authors describe it as “the RT-qPCR cycle threshold”. They said they’d welcome feedback in making this more usable.
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