Clinical manifestations in patients exposed to an environmental toxic accident (Abidjan, Ivory Coast 2006)

Introduction: In 2006, 528 tons of petroleum toxic waste have been released in Abidjan (Ivory Coast) during a major environmental accident. This study was aimed to describe the clinical manifestations provoked by these toxic waste. Methods: We have analysed the records of patients admitted to the university hospital of Cocody (Abidjan) following exposure to toxic waste. All the information were recorded on specific files or on notification files created by the physicians of the National Institute of Public Health, the authority charged with the supervision of this exercise. The files were completed by the physician in the course of the examination of the patient. Results: Over a period of 3-month-period, 10,598 patients were examined. The clinical manifestations affected all age groups. They were dominated by respiratory symptoms: pulmonary (74.5%) and upper respiratory (31.0%). Pulmonary symptoms included cough (48.8%), chest pain (37.9%), dyspnoea (9.5%) and a few cases of hemoptysis. Digestive symptoms mainly comprised abdominal pain (36.2%), diarrhea (23.0%), abdominal distension (19.9%) and vomiting (9.9%). The other symptoms were neurological, ophthalmic, cardiovascular and gynaecological. More than 96% of patients presented with at least two symptoms. The respiratory symptoms were significantly more frequent in patients over the age of 17 while diarrhea and vomiting were more often found in patients less than 17 years old. Chest pain was significantly more common in men while abdominal pain and vomiting predominated in women (P= 0.001). Conclusion: The clinical consequences of toxic waste exposure were varied and sometimes serious. A medium- and long-term evaluation of the subjects is required.