Short-Term Association between Sulfur Dioxide and Mortality: A Multicountry Analysis in 399 Cities

Background: Epidemiological evidence on the health risks of sulfur dioxide (SO2) is more limited compared with other pollutants, and doubts remain on several aspects, such as the form of the exposure-response relationship, the potential role of co-pollutants, as well as the actual risk at low concentrations and possible temporal variation in risks.

March 2023