Alliance for Pandemic Preparedness

December 7, 2020

Quantifying the Impact of Test-Trace-Isolate-Quarantine (TTIQ) Strategies on COVID-19 Transmission

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[Pre-print, not peer-reviewed] A study modeling impacts of a test-trace-isolate-quarantine (TTIQ) strategy on SARS-CoV-2 transmission showed that finding and isolating positive individuals quickly after symptom onset had the largest effects on reducing cases, and that contact tracing may mitigate suboptimal test coverage or delays. Overall, TTIQ was found to be effective in controlling epidemics with R = 1.5 or below.

Ashcroft et al. (Dec 7, 2020). Quantifying the Impact of Test-Trace-Isolate-Quarantine (TTIQ) Strategies on COVID-19 Transmission. Pre-print downloaded Dec 6 from  https://www.medrxiv.org/content/10.1101/2020.12.04.20244004v1