Table 1.
Characteristics of children with multisystem inflammatory syndrome (N = 142).
| Total | School closure* | School opening* | |
|---|---|---|---|
| (N = 142) | (N = 38) | (N = 104) | |
| Clinical characteristics and outcomes | |||
| Age (years), median (IQR) | 8.3 [4.8–11.8] | 9.5 [4.0–12.8] | 8.1 [5.2–11.4] |
| Sex ratio (F/M) | 0.8 | 0.7 | 0.8 |
| Initial left ventricular dysfunction (%) | 85 (60) | 24 (63) | 61 (59) |
| PICU care (%) | 96 (68) | 30 (79) | 66 (63) |
| hemodynamic support (%) | 62 (44) | 17 (45) | 45 (43) |
| Education setting | |||
| Kindergarten (%) | 45 (32) | 14 (37) | 31 (30) |
| Elementary school (%) | 52 (36) | 8 (21) | 44 (42) |
| Middle school (%) | 36 (25) | 14 (37) | 22 (21) |
| High school (%) | 9 (6) | 2 (5) | 7 (7) |
| Source of SARS-CoV-2 transmission | |||
| Household contact (%) | 87 (61) | 25 (66) | 62 (60) |
| Educational setting contact (%) | 5 (4) | –** | 5 (5) |
| Unidentified source of transmission (%) | 49 (35) | 12 (32) | 37 (35) |
Data are presented as median [Q1–Q3] or number (%). Initial left ventricular dysfunction: Left ventricular ejection fraction <55%.
*
“School closure” (from May 1 to September 13, 2020); “school opening” (rest of the study period).
**
One child was contaminated by a friend, out of the educational setting. IQR, interquartile range; PICU, pediatric intensive care unit.