ArticleScientific reports2026
SARS-CoV-2 surveillance and vaccine effectiveness among dental healthcare workers during the omicron surge.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
10 authors.
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Abstract
Dental students and practitioners may have an increased risk of COVID-19 infection due to frequent aerosol-generating procedures (AGP) and close patient contact. We examined the role of vaccination status, work role, and AGP frequency on positive SARS-CoV-2 PCR surveillance test using a Cox proportional hazards regression and weighted for dropout. A total of 410 dental health workers (200 students, 104 faculty, and 106 staff) had 8,270 screening tests performed between May 2020 and February 2022, with 158 positive tests; 60 (38%) occurred in January 2022. Omicron had a significant impact on vaccination effectiveness. Vaccine effectiveness within < 4 months was 91% (HR: 0.09,95% CI: 0.02-0.40) prior to Omicron, which decreased after its emergence. Work role was not associated with risk of positive test. Reported AGP frequency was also not associated with positive test risk; however, these analyses were limited to a subset of participants and should be considered exploratory. More than a third of all positive tests occurred during one month of Omicron. We found a high vaccine effectiveness prior to the Omicron surge, which decreased after the emergence of Omicron. Our results support encouraging dental healthcare workers (DCWs) to maintain up-to-date vaccination and continue engaging in preventive measures.
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