[Articles] Wildfire-specific fine particulate matter and preterm birth: a US ECHO Cohort analysis

In a prospective cohort, we observed increased odds of preterm birth associated with wildfire PM2·5 exposure in the western USA, with findings suggesting an exposure–response relationship for increasing exposure intensity and duration. Preterm birth was also associated with exposure to smoke days in mid-to-late pregnancy at the national level. For practice and policy, these findings support the need for public health interventions aimed at reducing exposure to wildfire smoke during pregnancy.