LAVALLEN Carla Mariela
congresos y reuniones científicas
Epidemiology and approach treatment of human cystic echinococcosis: case series study
Buenos Aires
Congreso; I Congreso Internacional de Zoonosis y Enfermedades Emergentes, VII Congreso Argentino de Zoonosis; 2011
Institución organizadora:
Asociació Argentina de Zoonosis
Cystic echinococcosis (CE) is a zoonoses of worldwide distribution caused mainly by the metacestode Echinococcus granulosus. In Argentina, its distribution reaches endemic levels. Objective: The aims of this study were to investigate the trends in confirmed cases of human CE recorded in"HospitalPrivadodeComunidad" (HPC) in Mardel Plata city during a period of 28years (1974-2002) and to study demographic and clinical characteristics of cases together with epidemiological factors associated with the disease. Material and method: Clinical records of operated and/or diagnosed patients were reviewed with regard to this disease. Official notification (ON) records were used to compare the MAI (mean annual incidence) of CE between 1998 and 2002 with the MAI of CE in HPC during the same period. Data analysis was performed using Epi Info 2000 and the R statistical software. One hundred and fifteen cases (57.4% women; mean age 61.3+17.1 years) were included in this retrospective study, 80% of which lived in urban areas. Result: The average incidence for the period was 1,98 per 100000 inhabitants. Age groups between 60 and 89 showed the higest MAl. In 76.5% of the cases, ultrasonography was used to diagnose the disease. Hepatic location was the most frequently seen. Ninety point four per cent of the total diagnosed CE patients received any approach due to illness, 47.1% received surgical treatment and 19.2% pharmacological treatment. The mean length of hospital stay was 15 days. The average incidence for period 1997-2001 was 3.6 and 1.3 in HPC and Official Notification respectively.Conclusion: The average annual incidence of CE could be under-estimated as it only reflects symptomatic cases. The most diagnosticated age group was 60-89 years-old. This could be due to the slow course of development for the CE and coincides with the high percentage of adult people in the study area. CE infection is closely related to people with high risk factors such as contaminated soil or contact with infected dogs with parasit eeggs. Ultrasound alone or in combination with other techniques is the method most frequently used to diagnose the diasease.Surgery is the first choice for complicated cysts. This disease generates a high cost for the hospital and an important social impact.  Although CE is a disease of obligatory notification in Argentina, not all cases are reported. The permanence of CE the region is mainly due to the natural transmission of the parasite in the absence of control and prevention measures. Health authorities should implement the necessary strategies in the study area.Sponsorships: Fund. Roemmers & UNMdP 15/E353.