Are there scientific studies on who poses a greater risk to other people: 1. an untested, vaccinated person or 2. a recently tested, non-vaccinated person? And how does it compare to the obviously least infectious 3. recently tested, vaccinated person?

Aug 7, 2021 · 7:23 AM UTC

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Replying to @stilkov
I'd say it depends on how many people are currently infected, what kind of vaccine was used (mRNA, vector), whether they were fully or partially vaccinated, how long ago they were vaxxed, and on the kind of test that was used (PCR, RAT). In short, there are too many variables.
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Replying to @stilkov
Breakthrough infection during quarantine, fully vaccinated, tested negative twice before his flight. scmp.com/news/china/article/…

Former NBA star Jeremy Lin tests positive for Covid-19 in Shanghai

Basketball player has been vaccinated and had returned two negative tests, before he left the US and after he arrived in China.

scmp.com
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Replying to @stilkov
Have the current daily rate of infection in your location be r (varies by time/location). Assume vaccine efficacy of 94%. Assume contagion period is the first 8 days after infection. covid risk(example 1) = r * (1-0.94) * 8 = r * 0.06 * 8 =0.48r
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