Browsing by Author "Rak, Zsolt"
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Item Open Access A School-Based SARS-CoV-2 Testing Program: Testing Uptake and Quarantine Length After In-School Exposures.(Pediatrics, 2022-02) Boutzoukas, Angelique E; Zimmerman, Kanecia O; Mann, Tara K; Moorthy, Ganga S; Blakemore, Ashley; McGann, Kathleen A; Smith, Michael J; Nutting, Boen; Kerley, Karen; Brookhart, M Alan; Edwards, Laura; Rak, Zsolt; Benjamin, Daniel K; Kalu, Ibukunoluwa CObjectives
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-related quarantines, which are required after close contact with infected individuals, have substantially disrupted in-person education for kindergarten through 12th grade (K-12) students. In recent recommendations, shortened durations of quarantine are allowed if a negative SARS-CoV-2 test result is obtained at 5 to 7 days postexposure, but access to testing remains limited. We hypothesized that providing access to in-school SARS-CoV-2 testing postexposure would increase testing and reduce missed school days.Methods
This prospective cohort study was conducted in one large public K-12 school district in North Carolina and included 2 periods: preimplementation (March 15, 2021, to April 21, 2021) and postimplementation (April 22, 2021, to June 4, 2021), defined around initiation of an in-school SARS-CoV-2 testing program in which on-site access to testing is provided. Number of quarantined students and staff, testing uptake, test results, and number of missed school days were analyzed and compared between the preimplementation and postimplementation periods.Results
Twenty-four schools, including 12 251 in-person learners, participated in the study. During preimplementation, 446 close contacts were quarantined for school-related exposures; 708 close contacts were quarantined postimplementation. Testing uptake after school-related exposures increased from 6% to 40% (95% confidence interval: 23% to 45%) after implementation, and 89% of tests were conducted in-school. After in-school testing implementation, close contacts missed ∼1.5 fewer days of school (95% confidence interval: -2 to -1).Conclusions
Providing access to in-school testing may be a worthwhile mechanism to increase testing uptake after in-school exposures and minimize missed days of in-person learning, thereby mitigating the pandemic's ongoing impact on children.Item Open Access Test-to-Stay After Exposure to SARS-CoV-2 in K-12 Schools.(Pediatrics, 2022-05) Campbell, Melissa M; Benjamin, Daniel K; Mann, Tara; Fist, Alex; Kim, Hwasoon; Edwards, Laura; Rak, Zsolt; Brookhart, M Alan; Anstrom, Kevin; Moore, Zack; Tilson, Elizabeth Cuervo; Kalu, Ibukunoluwa C; Boutzoukas, Angelique E; Moorthy, Ganga S; Uthappa, Diya; Scott, Zeni; Weber, David J; Shane, Andi L; Bryant, Kristina A; Zimmerman, Kanecia O; ABC SCIENCE COLLABORATIVEObjectives
We evaluated the safety and efficacy of a test-to-stay program for unvaccinated students and staff who experienced an unmasked, in-school exposure to someone with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Serial testing instead of quarantine was offered to asymptomatic contacts. We measured secondary and tertiary transmission rates within participating schools and in-school days preserved for participants.Methods
Participating staff or students from universally masked districts in North Carolina underwent rapid antigen testing at set intervals up to 7 days after known exposure. Collected data included location or setting of exposure, participant symptoms, and school absences up to 14 days after enrollment. Outcomes included tertiary transmission, secondary transmission, and school days saved among test-to-stay participants. A prespecified interim safety analysis occurred after 1 month of enrollment.Results
We enrolled 367 participants and completed 14-day follow-up on all participants for this analysis. Nearly all (215 of 238, 90%) exposure encounters involved an unmasked index case and an unmasked close contact, with most (353 of 366, 96%) occurring indoors, during lunch (137 of 357, 39%) or athletics (45 of 357, 13%). Secondary attack rate was 1.7% (95% confidence interval: 0.6%-4.7%) based on 883 SARS-CoV-2 serial rapid antigen tests with results from 357 participants; no tertiary cases were identified, and 1628 (92%) school days were saved through test-to-stay program implementation out of 1764 days potentially missed.Conclusion
After unmasked in-school exposure to SARS-CoV-2, even in a mostly unvaccinated population, a test-to-stay strategy is a safe alternative to quarantine.Item Open Access Test-to-Stay After SARS-CoV-2 Exposure: A Mitigation Strategy for Optionally Masked K-12 Schools.(Pediatrics, 2022-11) Campbell, Melissa M; Benjamin, Daniel K; Mann, Tara K; Fist, Alex; Blakemore, Ashley; Diaz, Kylee S; Kim, Hwasoon; Edwards, Laura J; Rak, Zsolt; Brookhart, M Alan; Moore, Zack; Tilson, Elizabeth Cuervo; Kalu, Ibukun; Boutzoukas, Angelique E; Moorthy, Ganga S; Uthappa, Diya; Scott, Zeni; Weber, David J; Shane, Andi L; Bryant, Kristina A; Zimmerman, Kanecia OObjectives
We evaluated the impact of a test-to-stay (TTS) program on within-school transmission and missed school days in optionally masked kindergarten through 12th grade schools during a period of high community severe acute respiratory syndrome coronavirus 2 transmission.Methods
Close contacts of those with confirmed severe acute respiratory syndrome coronavirus 2 infection were eligible for enrollment in the TTS program if exposure to a nonhousehold contact occurred between November 11, 2021 and January 28, 2022. Consented participants avoided school exclusion if they remained asymptomatic and rapid antigen testing at prespecified intervals remained negative. Primary outcomes included within-school tertiary attack rate (test positivity among close contacts of positive TTS participants) and school days saved among TTS participants. We estimated the number of additional school-acquired cases resulting from TTS and eliminating school exclusion.Results
A total of 1675 participants tested positive or received at least 1 negative test between days 5 and 7 and completed follow-up; 92% were students and 91% were exposed to an unmasked primary case. We identified 201 positive cases. We observed a tertiary attack rate of 10% (95% confidence interval: 6%-19%), and 7272 (89%) of potentially missed days were saved through TTS implementation. We estimated 1 additional school-acquired case for every 21 TTS participants remaining in school buildings during the entire study period.Conclusions
Even in the setting of high community transmission, a TTS strategy resulted in substantial reduction in missed school days in optionally masked schools.Item Open Access Test-to-Stay in Kindergarten Through 12th Grade Schools After Household Exposure to Severe Acute Respiratory Syndrome Coronavirus 2.(The Journal of school health, 2023-05) Scott, Zeni; Uthappa, Diya M; Mann, Tara K; Kim, Hwasoon; Brookhart, MA; Edwards, Laura; Rak, Zsolt; Benjamin, Daniel K; Zimmerman, Kanecia O; ABC Science CollaborativeBackground
Test-to-stay (TTS) is a strategy to limit school exclusion following an exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We evaluated the use of TTS within universally masked kindergarten through 12th grade (K-12) school settings following household SARS-CoV-2 exposure.Methods
Three hundred twenty-two participants were enrolled. Serial rapid antigen testing was performed up to 15 days post-exposure. Analysis-eligible participants completed the 15-day testing protocol, tested positive any time during the testing window, or received a negative test on or after day 9. Primary outcomes included within-school tertiary attack rate (TAR) (test positivity among close contacts of positive TTS participants), and school days saved among TTS participants.Results
Seventy-three of 265 analysis-eligible participants tested positive for SARS-CoV-2 (secondary attack rate of 28% [95% CI: 16-63%]). Among 77 within-school close contacts, 2 were positive (TAR = 3% [95% CI: 1-5%]). Participant absences were limited to 338 days, resulting in 82% of 1849 school days saved.Implications for school health policy, practice, and equity
TTS facilitates continued in-person learning and can greatly reduce the number of missed school days.Conclusions
Within universally masked K-12 schools, TTS is a safe alternative to school exclusion following household SARS-CoV-2 exposure.