Cardiopulmonary hospitalization risks from wildfire-specific and non-wildfire PM(2.5) in 20 US states.

Wildfire-specific PM 2.5 increases are linked to 10-16% higher cardiopulmonary hospitalization risks, surpassing non-wildfire PM 2.5 effects in 20 US states.

• Why it matters: Understanding the long-term health impacts of wildfire-specific air pollution is crucial as wildfire activity rises, yet its toxicity relative to typical pollution remains uncertain.
• What they did: A self-controlled analysis examined 2-year average wildfire-specific and non-wildfire PM 2.5 levels and their association with hospitalization risks across 20 states from 2006 to 2019, focusing on a 1 μg/m3 increase.
• The result: Findings show wildfire-specific PM 2.5 poses greater risks for cardiopulmonary hospitalizations than non-wildfire PM 2.5, especially among vulnerable groups, highlighting the need for targeted mitigation strategies.