PMC7324777_01
(A,B) Multifocal ground-glass opacities are shown in the lung. (C) Distribution of clinical symptoms and typical manifestations of viral pneumonia in chest CT. Class 1, symptom (+) CT (+); Class 2, symptom (+) CT (-); Class 3, symptom (-) CT (+); Class 4, symptom (-) CT (-).
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F1
Figures 1A,B display representative images of the chest CT from a child with COVID-19 Infection upon admission. Based on the respiratory and digestive symptoms and typical manifestations of viral pneumonia in chest CT, the children were divided into four groups (Figure 1C). In comparison, fewer anal swab nucleic acid tests (65.2%) turned negative than did nasopharyngeal swab tests in 28 days (HR 1.718, 95% CI 1.040-2.839, P = 0.0346, Figure 1).
Percentages of negative nasopharyngeal swabs and anal swabs test during follow-up.
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F2
Figure 2 shows the temporal pattern in the percentage of negative RT-PCR results for the nasopharyngeal or anal swabs of the 46 patients who had both their nasopharyngeal and anal swabs tested.