Table 5. Summary of SARS-CoV-2 exposures by index students at schools and kindergarten after school re-opening.
| Variables | Kindergarten, 4–5 yr | Elementary school, 6–12 yr | Middle school, 13–15 yr | High school, 16–18 yr | Total | |
|---|---|---|---|---|---|---|
| No. of students | 6 | 17 | 6 | 15 | 44 | |
| Known infection source | 4 (66.7) | 15 (88.2) | 3 (50.0) | 7 (46.7) | 29 (65.9) | |
| House hold infection | 4 (66.7) | 14 (82.4) | 3 (50.0) | 2 (13.3) | 23 (52.3) | |
| Unknown infection source | 2 (33.3) | 2 (11.8) | 3 (50.0) | 8 (53.3) | 15 (34.1) | |
| No. of exposed schools | 6 | 13 | 6 | 14 | 38 | |
| Tested individuals | ≥ 875 | ≥ 3,374 | ≥ 1,525 | ≥ 6,255 | ≥ 13,100 | |
| Exposed to two brothers | - | 1,071a | - | - | ||
| Secondary infection | 0 | 1 | 0 | 0 | 1 | |
Data are presented as number (%).
SARS-CoV-2 = severe acute respiratory syndrome coronaviru-2.
aAdditional 1,071 individuals tested because of exposures from two brothers in the same family, one was an elementary school student, and the other was a middle school students.