The alert is part of a survey presented by researchers from the Climate and Health Observatory of the Oswaldo Cruz Foundation (Fiocruz), which compiles data on pollutant concentrations and the distribution of fire spots in the state.
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In the first days of October this year, Manaus recorded intense episodes of atmospheric pollution, with PM2.5 concentrations far exceeding the values recommended by the World Health Organization (WHO).
Composed of particles capable of penetrating deeply into the lungs and, under certain conditions, reaching the bloodstream, the pollutant is associated with an increased risk of respiratory and cardiovascular diseases, including exacerbation of asthma, myocardial infarction, and stroke.
Exposure represents a concern for the entire population, particularly children, the elderly, pregnant women, and individuals with pre-existing conditions.
Indigenous people
In indigenous territories, the risks associated with smoke exposure may be exacerbated by socio-environmental inequalities, difficulties in displacement, and limitations in access to health services, especially specialized and more complex care.
The survey presents information on the territorial distribution of observed and predicted PM2.5 concentrations in relation to fire spots and indigenous villages. The document also highlights the need to monitor environmental conditions in the face of potential intensification of El Niño, which may favor dry periods and increase the risk of forest fire propagation in certain areas.
Air quality
Among the topics addressed by the document is the development of the AlertAr Saúde System, a monitoring and forecasting tool for indigenous health focused on air quality, under development by the Climate and Health Observatory of Fiocruz in partnership with the Indigenous Health Secretariat (Sesai) of the Ministry of Health.
The system seeks to integrate PM2.5 concentration forecasts and information about heat spots and fires, allowing for the early identification of higher exposure situations in indigenous territories. This information can support the planning of surveillance, prevention, and response actions by the Special Indigenous Health Districts (DSEI) and their health teams.