tetano
Editor, Senior Moderator
Am J Epidemiol
. 2023 Nov 8:kwad218.
doi: 10.1093/aje/kwad218. Online ahead of print. Relative Role of Age Groups And indoor Environments in Influenza Transmission Under Different Urbanization Rates in China
Hao Lei[SUP] 1 [/SUP], Nan Zhang[SUP] 2 [/SUP], Shenglan Xiao[SUP] 3 [/SUP], Linan Zhuang[SUP] 2 [/SUP], Xueze Yang[SUP] 2 [/SUP], Tao Chen[SUP] 4 [/SUP], Lei Yang[SUP] 4 [/SUP], Dayan Wang[SUP] 4 [/SUP], Yuguo Li[SUP] 5 [/SUP], Yuelong Shu[SUP] 4 [/SUP]
Affiliations
Exploring the relative role of different indoor environments in respiratory infections transmission remains unclear, which is crucial for developing targeted non-pharmaceutical interventions. In this study, a total of 2,583,441 influenza-like illness cases tested from 2010 to 2017 in China were identified. An agent-based model was built and calibrated with the surveillance data, to assess the roles of three age groups (children <19 years, younger adults 19-60 years, older adults >60 years) and four types of indoor environments (home, schools, workplaces and community areas) in influenza transmission by province with varying urbanization rates. When the urbanization rates increased from 35% to 90%, the proportion of children aged <19 years among influenza cases decreased from 76% to 45%. Additionally, we estimated that infections originating from children decreased from 95.1% (95% confidence interval (CI): 92.7%-97.5%) to 59.3% (95% CI: 49.8%-68.7%). Influenza transmission in schools decreased from 80.4% (95% CI: 76.5%-84.3%) to 36.6% (95% CI: 20.6%-52.5%), while transmission in the community increased from 2.4% (95% CI: 1.9%-2.8%) to 45.4% (95% CI: 35.9%-54.8%). With increasing urbanization rates, community areas and younger adults contributed more to infection transmission. These findings could help the development of targeted public health policies.
Keywords: China; age group; indoor environments; influenza; urbanization.
. 2023 Nov 8:kwad218.
doi: 10.1093/aje/kwad218. Online ahead of print. Relative Role of Age Groups And indoor Environments in Influenza Transmission Under Different Urbanization Rates in China
Hao Lei[SUP] 1 [/SUP], Nan Zhang[SUP] 2 [/SUP], Shenglan Xiao[SUP] 3 [/SUP], Linan Zhuang[SUP] 2 [/SUP], Xueze Yang[SUP] 2 [/SUP], Tao Chen[SUP] 4 [/SUP], Lei Yang[SUP] 4 [/SUP], Dayan Wang[SUP] 4 [/SUP], Yuguo Li[SUP] 5 [/SUP], Yuelong Shu[SUP] 4 [/SUP]
Affiliations
- PMID: 37946322
- DOI: 10.1093/aje/kwad218
Exploring the relative role of different indoor environments in respiratory infections transmission remains unclear, which is crucial for developing targeted non-pharmaceutical interventions. In this study, a total of 2,583,441 influenza-like illness cases tested from 2010 to 2017 in China were identified. An agent-based model was built and calibrated with the surveillance data, to assess the roles of three age groups (children <19 years, younger adults 19-60 years, older adults >60 years) and four types of indoor environments (home, schools, workplaces and community areas) in influenza transmission by province with varying urbanization rates. When the urbanization rates increased from 35% to 90%, the proportion of children aged <19 years among influenza cases decreased from 76% to 45%. Additionally, we estimated that infections originating from children decreased from 95.1% (95% confidence interval (CI): 92.7%-97.5%) to 59.3% (95% CI: 49.8%-68.7%). Influenza transmission in schools decreased from 80.4% (95% CI: 76.5%-84.3%) to 36.6% (95% CI: 20.6%-52.5%), while transmission in the community increased from 2.4% (95% CI: 1.9%-2.8%) to 45.4% (95% CI: 35.9%-54.8%). With increasing urbanization rates, community areas and younger adults contributed more to infection transmission. These findings could help the development of targeted public health policies.
Keywords: China; age group; indoor environments; influenza; urbanization.