Following a health signal suspecting an excess of cancer cases emanating from the mayor of the commune of Lescout (Tarn) in 2018, an epidemiological study was carried out over the period 1986-2015 using data from the Cancer Registry of Tarn. The results of this first study did not highlight any excess cases of cancer in the municipality nor in the municipalities located within a 3 km radius around it, compared to the rest of the department, but an increasing trend “all cancers” over time was observed in the commune of Lescout. Public Health France then recommended carrying out an update of this analysis over a period of five years to monitor the evolution of this trend. Furthermore, the study of the scientific literature did not highlight a particular cancer risk linked to exposure to poultry farming present in the municipality. This report presents this update over the period 2016-2020 based on the methods described in the new guide to the investigation of clustered cases of non-communicable diseases published by Public Health France (consultation of stakeholders, spatial scanning method -temporal and method of smoothed standardized incidence ratios (SIR), in particular). Three approaches were implemented: (i) an update of the initial study over the period 2016-2020 by calculating smoothed SIR and RR for comparison with the previous study; (ii) a descriptive analysis of incident cases of cancer, focused on the area corresponding to the concerns of the population exposed to olfactory nuisances, over the years 2015-2020 (availability of geocoded data); (iii) an analysis by spatio-temporal scanning over the entire Tarn over the years 2006-2020. The results do not show an excess incidence of cancers within the population of Lescout compared to the rest of the department, whatever the type of analysis considered. This for all cancers, for colon-rectal cancer, breast cancer, leukemia and associated pathologies, prostate cancer, lung cancer and bladder cancer, the most frequently observed cancers in the municipality. This conclusion remains the same after risk smoothing or spatio-temporal scanning. In addition, the sub-municipal analysis restricted to the area corresponding to the population’s concerns does not reveal more cancers in this area than among the population residing in the rest of the municipality. The study carried out in parallel by ATMO Occitanie on the potential olfactory nuisances linked to emissions of odorous products (ammonia, hydrogen sulphide) and their measurements in the air should provide additional useful information for treatment. concerns for the health of the local population.
Auteur : Stéphanie River
Year of publication: 2024
Pages : 34 p.
Collection : Monitoring data
Health
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