COVID-19 Vaccine Effectiveness against Symptomatic and Asymptomatic SARS-CoV-2 Infections with the Delta Variant among a Cohort of Children Aged ≥ 12 Years and Adults in Utah
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OA: gold
CC-BY-NC-ND-4.0
Abstract
We conducted weekly surveillance for SARS-CoV-2 infection among a sample of households with ≥1 child aged 0-17 years from selected Utah counties. A Cox proportional hazards model approach was used to calculate infection hazard rate and vaccine effectiveness. Findings show that the recommended primary series of COVID-19 vaccine was effective against circulating variants during a Delta-predominant wave in Utah.
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- europepmc
- last seen: 2026-05-19T01:45:01.086888+00:00
- unpaywall
- last seen: 2026-05-21T05:10:58.409756+00:00
License: CC-BY-NC-ND-4.0