Fig. 3 Patient and disease factors affecting percentage of high-touch contamination. a Mean percentage of high-touch surface contaminated by day of illness with 95% confidence interval with best fit curve, n=30.b Percentage of high-touch surfaces contaminated by clinical cycle threshold values with 95% confidence interval with bestfit curve, n=30.c Mean percentage of high-touch surface contaminated by day of illness with 95% confidence interval grouped by symptoms, n=30.Particles >4μm in diameter are collected in a 15 mL centrifuge tube, particles 1–4 μm in diameter are collected in a 1.5 mL centrifuge tube, and particles