실제로 도 보건환경연구원은 집단발병 사례가 있었던 군포시, 의정부시 등 도내 요양병원 30곳의 간병인, 종사자, 입원환자 3979명을 풀링 검사 방식으로 검사해 모두 음성으로 확인했다.
In fact, the Provincial Health and Environment Research Institute examined 3,979 caregivers, employees, and inpatients from 30 nursing hospitals in the province, including Gunpo-si and Uijeongbu-si, where outbreaks had occurred, by using a pooling test method and all results came out negative.