COVID-19 social interventions were associated with amplified, not attenuated, indoor source pollutant–respiratory health associations: a six-year time-series analysis in Xi’an, China
Shikang Liu, Zhaozhao Hui, Wen Zhang, Luping Chen, Mingxu Wang · 2026
Read COVID-19 social interventions were associated with amplified, not attenuated, indoor source pollutant–respiratory health associations: a six-year time-series analysis in Xi’an, China by Shikang Liu, Zhaozhao Hui, Wen Zhang, Luping Chen, Mingxu Wang (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13454252.txt.
Description
Shikang Liu and four co-authors test whether COVID-19 social controls changed how air pollution tracked respiratory illness in Xi'an, China. Their 2026 study counts 2,052,777 respiratory clinic visits over 2,192 days from January 2020 to December 2025 at one large hospital. The span splits into strict control, transition, and post pandemic phases.
Sulfur dioxide and nitrogen dioxide, both combustion gases, showed the strongest links to visits across the whole span. Those links ran stronger during strict control than after the pandemic, with sulfur dioxide's excess risk at 18.40 percent against 2.91 percent. Formal interaction tests fell short of significance, and fine particles plus ozone showed no phase pattern at all. The authors read the split as matching an indoor story: long hours at home raised exposure to home heating fumes.
Catalog record
| CREATOR | Shikang Liu, Zhaozhao Hui, Wen Zhang, Luping Chen, Mingxu Wang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 28 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |