Table 1. Descriptive statistics for Ewha Safety Campus (ESC) project participants

Period	The number of confirmed cases	The number of applications	Positive rate (%)
Total period (Mar 02 to Apr 30, 2022)	711	11,348	6.27
March	607	6,519	9.31
April	104	4,829	2.15

The number of tests indicates the number of applications (Combo-swab, NPS RT-PCR, or both).
NPS, nasopharyngeal swab.