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. 2022 Feb 25;5(2):e220088. doi: 10.1001/jamanetworkopen.2022.0088

Figure 3. Transmission Risk After Release From Test-Based Strict and Nonstrict Quarantines of Various Lengths.

Figure 3.

Individuals were released from quarantine if they received a negative test result and were asymptomatic; thus risk is the percentage of individuals with positive test results who first received positive test results after the given day and were asymptomatic until that day. Plots show transmission risk based on conversions for the positive test results of 301 university students and staff. Values are shown for days 7 (corresponding to the US Centers for Disease Control and Prevention [CDC] quarantine with testing alternative guideline), 10 (corresponding to the CDC quarantine without testing alternative guideline), and 14 (corresponding to the original CDC quarantine guideline). Strict quarantine included designated housing that consisted of a private room, private bathroom, and meal delivery. Nonstrict quarantine potentially included interactions with other household members. Error bars represent 95% CIs.