• Jimei Yang, Junqing Li, Ruiliang Lv, Xiang Wang, Chunfeng Zheng, Yan Gu, and Mingzhu Zhang.
• Jinan Second Maternal and Child Health Hospital, Jinan, Shandong, China.
• Medicine (Baltimore). 2023 Sep 1; 102 (35): e35052e35052.

AbstractThis study aimed to analyze the trends of childhood pneumonia before and after the corona virus disease 2019 (COVID-19) pandemic in Laiwu, China, and explore the associated risk factors to provide a reference for the prevention, control, and treatment of childhood pneumonia. In this cross-sectional study, data were collected from 11,716 children aged 3 to 12 years who underwent chest radiography/computed tomography from January 2018 to December 2021 in Laiwu, China. The generalized estimating equation model was used to analyze the time trend of the pneumonia detection rate. Multivariate logistic regression analysis was used to analyze the risk factors for pneumonia in children. The overall pneumonia detection rate was 40.3% (4721/11,716). The pneumonia detection rate was 41.5% and 39.5% in 2018 and 2019, respectively, before the COVID-19 pandemic, which decreased to 38.1% in 2020 during the pandemic and increased to 40.7% in 2021 after the pandemic. Multivariate logistic regression analysis showed that preterm birth (odds ratio [OR] = 1.68), frequent exposure to secondhand smoke (OR = 1.79), hospitalization ≥ 1 time in half a year (OR = 2.13), and history of allergic rhinitis (OR = 2.14) were risk factors for pneumonia in children. Wearing masks when outdoors (OR = 0.89) and engaging in regular physical activity (OR = 0.65) were protective factors. The pneumonia detection rate in children showed a decreasing trend during the COVID-19 pandemic in 2020 but an increasing trend after the pandemic in 2021. Premature birth, exposure to secondhand smoke, frequent hospitalization, and allergic rhinitis were risk factors for pneumonia in children. Wearing masks when outdoors and exercising may reduce the risk of pneumonia in children.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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