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. 2023 Mar 29;42(7):584–589. doi: 10.1097/INF.0000000000003918

TABLE 3.

Clinical Course of COVID-19

Grade Whole Group (2771) Children Hospitalized in 2020 (1025) Children Hospitalized in 2021 (1746) P
0 252 (9) 175 (17) 77 (4) <0.0001
1 1940 (70) 694 (68) 1246 (72)
2 434 (16) 134 (13) 300 (17)
3 116 (4) 19 (2) 97 (6)
4 29 (1) 3 (<1) 26 (1)

Grade 0, asymptomatic; Grade 1, mild (without pneumonia); Grade 2, moderate (pneumonia without desaturation); Grade 3, severe (pneumonia with desaturation); Grade 4, critical (acute respiratory distress syndrome - ARDS, shock, organ failure).

Data are presented as numbers (%).