Quantifying the impact of wildfire-related air-pollution, a national analysis revealed that Brazil had 2 million hospital admissions due to cardiorespiratory diseases between 2008 and 2018. The analysis showed that wildfire waves were associated with an increase of 23 percent (95%CI: 12%–33%) in respiratory hospital admissions and an increase of 21 percent (95%CI: 8%–35%) in circulatory hospital admissions. 

In the North (the Amazon region), region alone the survey estimated an increase of 38 percent (95%CI: 30%–47%) in respiratory hospital admissions and 27 percent (95%CI: 15%–39%) in circulatory hospital admissions. The study, published in Nature, reported epidemiological evidence that air pollution emitted by wildfires is significantly associated with a higher risk of cardiorespiratory diseases.