Cárdenas Soriano MDP, Medrano Sánchez JC, Gómez Martínez JA. Transmisión del SARS-CoV-2 en escolares durante el primer trimestre del curso 2021/2022 en la provincia de Albacete: incidencia e impacto de las nuevas variantes.
Aten Primaria 2023;
55:102516. [PMID:
36436313 PMCID:
PMC9637510 DOI:
10.1016/j.aprim.2022.102516]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/21/2022] [Accepted: 10/27/2022] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE
The objective of this study was to know the evolution of the COVID-19 pandemic in the school setting, and the effect of the new variants on it.
DESIGN
It is an observational longitudinal descriptive study during the first term of the academic year 21/22. SITE: Community health services.
PARTICIPANTS
Preschool, elementary, secondary, and high school students.
INTERVENTIONS
none.
MAIN MEASUREMENTS
We calculated cumulative incidence stratified by grade, source of infection and follow-up period, percentage of vaccinated cases and correlation between cumulative incidence in schooled children per week and cumulative incidence in the general population.
RESULTS
1526 cases were reported, and the cumulative incidence was 3,17% and 0,48% in within-school acquired cases. 20,9% were vaccinated. During follow-up, there was an important change in incidence from weeks 49/21 on, at the time Omicron began to appear in Spain, with an increase in secondary cases, mostly high school students. We found a high correlation between general population and schooled children's cumulative incidence (R2 = 0,59).
CONCLUSIONS
SARS-CoV-2 transmission in school settings has been affected by new circulating variants. Two propagation scenarios were identified, and they were like the community propagation pattern. This supports the hypothesis that school settings reflect the transmission in the community. Reinforcement of preventive measures and surveillance would have a positive effect on school settings.
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