Sample stations were set up in either the school auditorium or gymnasium to ensure appropriate crowd control and ventilation. Teachers and other school staff, including public safety, were able to manage lines and the shuttling of students back and forth from classes to testing stations, which allowed medical staff to focus on sample collection.
Informed consent was obtained by prior electronic communication to parents from school staff, asking them to agree to allow their child to participate in the testing program. Informed consent was identified as a challenge: Getting parents to understand that saliva testing was more comfortable than NP testing, and that the results were only being used to help keep the school safe, took time. School staff are used to obtaining consent from parents for field trips, but this was clearly more challenging for them.
The saliva collection process per child took more time than expected. Children fasted for 45 minutes before saliva collection. We used an active drool technique, which required children to pool saliva in their mouth then express it into a collection tube. Adults can generally do this on command, but we found it took 10 to 12 minutes per child. Saliva production was cued by asking the children to think about food, and by showing them pictures and TV commercials depicting food. Children 4 to 5 years old had more difficulty with the process despite active cueing, while those 6 to 12 years old had an easier time with the process. We collected data on a cohort of 80 children regarding their attitudes pre (Figure 1) and post collection (Figure 2). Children felt happier, less nervous, and less scared after collection than before collection. This trend reassured us that future collections would be easier for students.
A total of 15 of 18 school principals completed the telephone interview, yielding a response rate of 83%. Overall, 93% of the school principals agreed or completely agreed that the COVID-19 saliva testing program improved school safety; 93% agreed or completely agreed that they had an overall positive experience with the program; and 73% supported the ongoing use of saliva testing in their schools (Table 1). Administrators’ open-ended comments on their experience were positive overall (Table 2).
Discussion
By March 2020, many kindergarten to grade 12 public and private schools suspended in-person classes due to the pandemic and turned to online learning platforms. The negative impact of school closures on academic achievement is projected to be significant.7,12,13 Ensuring schools can stay open and run operations safely will require routine SARS-CoV-2 testing. Our study investigated the feasibility of routine saliva testing on children aged 4 to 12 years on their school campuses. The ADPHC school on-site saliva testing program involved bringing lab providers onto 18 primary school campuses and required cooperation among parents, students, school administrators, and health care professionals.
