Volume 29, Number 3—March 2023
Research
Using Discarded Facial Tissues to Monitor and Diagnose Viral Respiratory Infections
Figure 3

Figure 3. Reverse transcription PCR signal (Ct) obtained from nasopharyngeal swab samples collected from persons with COVID-19 compared with Ct obtained from processed used facial tissues in study of using facial tissues to monitor and diagnose viral respiratory infection. Each square indicates a patient, and observations for the same patient are linked between plots. Black lines within boxes indicate medians; box tops, 75th percentile; box bottoms, 25th percentile; and whiskers, maximums and minimums. Ct, cycle threshold.