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Fig. 3 | BMC Infectious Diseases

Fig. 3

From: Prolonged viral shedding of SARS-CoV-2 and related factors in symptomatic COVID-19 patients: a prospective study

Fig. 3

Dynamic profile on viral loads detected by N gene (A) and ORF gene (B) among COVID-19 patients across the outbreak periods. Three periods (early, middle and late) were approximate equally classified based on the date of symptom onset of the included patients: 1st–24th January 2020 (red line, 229 patients), 25th–30th January 2020 (green line, 245 patients), and 31st January–5th March 2020 (blue line, 228 patients). Dots and error bars denote means and SDs, respectively

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