Decreased risk of COVID-19 pneumonia in children and adolescents during the Delta variant emergence.

ABSTRACT:

Objectives

This study aimed to evaluate factors associated with the risk of COVID-19 pneumonia in children (aged <10 years) and adolescents (aged 10-19 years) before (March 2020-April 2021) and during (May-July 2021) the Delta (B.1.617.2) variant emergence.

Study design

A retrospective and nationwide cohort study was conducted in Mexico.

Methods

Data from 26,961 laboratory-confirmed cases of COVID-19 were analyzed. Risk ratios (RRs) and 95% confidence intervals (CIs) were used to evaluate the association of the evaluated exposures with the risk of COVID-19 pneumonia.

Results

The overall incidence rate of pneumonia was 23.0 per 10,000 person-days, and it was lower during the Delta variant emergence (30.3 vs. 9.4 person-days, p < 0.001). In multiple analysis, a d

SUBMITTER: Murillo-Zamora E 

PROVIDER: S-EPMC8712269 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature