Figure 2. Rapid transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in detention facility, Louisiana, USA, May–June 2020. A) Ct values and viral culture results by days from symptom onset of any symptom in SARS-CoV-2–positive detained persons. Nucleocapsid protein 1 target Ct values and viral culture results of 66 specimens from 51 persons who were positive for SARS-CoV-2 by days from reported symptom onset. Ct values and viral culture results are also shown for 14 of the 51 specimens from persons who were positive a second time, and for 1 specimen that remained positive for a third test. Vertical dashed line indicates day 14 to depict the recommended medical isolation timeframe from symptom onset for persons in congregate settings. Shapes indicate culture results, and colors indicate day of positive test result. One positive test result is not included because Ct values were not reported. B) Ct values and viral culture results for SARS-CoV-2–positive detained persons at the time of first sample collection according to dormitory residence and day of first positive result. Nucleocapsid protein 1 target Ct values and viral culture results of the first SARS-CoV-2–positive test result for 110 detained persons is shown by dormitory of residence at the time of first sample collection. Horizontal lines indicate median Ct values for first positive samples from residents in each dormitory. One positive test result from a dormitory F resident is not included because Ct value was not reported. Ct , cycle threshold.