Is the absence of bronchial eosinophil a factor for a poor prognosis for occupational asthma? Abstract Since occupational asthma (OA) is one of the most widespread occupational lung diseases, the CSST introduced a detection and compensation program making it possible to remove victims from their workplace as soon as the diagnosis is made. Despite this proactive approach, 70% of afflicted workers continue to show OA symptoms after being removed from exposure to the causal agent. A recent study showed that the health of those with bronchial eosinophilia at the time of their exposure to the occupational agent concerned took a turn for the better following their removal, which was not the case of the others. The purpose of this activity is to assess whether the absence of eosinophilia during exposure to the allergen responsible for OA at the time of the diagnosis makes it possible to identify a group of workers whose long-term prognosis is poorer, even after their removal from exposure. If the health of the subjects without eosinophilia proves to evolve less favourably than that of those with the condition, it would be necessary to prescribe longer follow-up in their cases and perhaps the testing of other therapeutics than those currently being offered them. Produced Under this Project Scientific Reports Lack of airway eosinophilia: an indicator of poor prognosis in occupational asthma? Research Report: R-809 Simplified Articles Absence de cellules éosinophiles dans les bronchesIndicateur utile pour le pronostic de l'asthme professionnel ? Volume 27, n0 3 Scientific Publications Prognosis of the workers with non-eosinophilic occupational asthmaLemière C., Tremblay C., Bohadana A., Chaboillez S.Source : in American Thoracic Society 2011 International Conference, (May 13-18, 2011 : Denver, Colorado). American Journal of Respiratory Critical Care Medicine, vol. 183, 2011, p. A1172 Additional Information Type: Project Number: 0099-7690 Status: Completed Year of completion: 2012 Research Field: Chemical and Biological Hazard Prevention Team: Catherine Lemière (Hôpital du Sacré-Coeur)Lucie Blais (Hôpital du Sacré-Coeur)Lisa Téolis (Hôpital du Sacré-Coeur)Amélie Forget (Hôpital du Sacré-Coeur)