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Gaceta Sanitaria
versão impressa ISSN 0213-9111
Resumo
ALMAGRO NIEVAS, Diego; ACUNA CASTILLO, Rafael; HERNANDEZ JEREZ, Antonio e ROBLES MONTES, Alberto. Investigation of an outbreak of acute respiratory illness due to exposure to chlorine gas in a public swimming pool. Gac Sanit [online]. 2008, vol.22, n.3, pp.287-290. ISSN 0213-9111.
A case-control study was designed to investigate a chemical accident that occurred in a swimming-pool in the summer of 2005. The aim was to describe the environmental factors involved in the accident, to assess the effect of chlorine gas on the respiratory system, and to perform a clinical and spirometric follow-up. The following interventions were carried out: environmental inspection, epidemiologic survey (including sociodemographic variables), location at the time of the accident, perception of an abnormal smell, and clinical and spirometric outcomes to assess respiratory function. Sixty-five cases and 48 controls were identified and interviewed. The accident was produced by accidental admixture of hydrochloric acid with sodium hypochlorite resulting in chlorine gas release. The main clinical symptoms were dyspnea and cough. The risk of becoming ill was 10-fold higher in children with a previous lung disease and was 4-fold higher when the distance from the chlorine source was less than 40 m. All cases recovered completely, except one who had a history of asthma.
Palavras-chave : Chlorine gas; Accidental exposure; Swimming pool; Toxic incident.