ABSTRACT
Ultrasonography (US) were used for screening of hydatid disease in 1321 asymptomatic individuals fron Río Negro Province, Argentina. A total of 76 positive subjects were identified with possible hydatid disease. Surgery was performed in 30 patients, conforming in 28 of them sonographic diagnosis (93.34%).
Subject(s)
Echinococcosis/diagnostic imaging , Argentina , Echinococcosis/prevention & control , Female , Humans , Male , Mass Screening , Retrospective Studies , UltrasonographyABSTRACT
Between June and November 1984, 904 asymptomatic people from endemic areas of hydatidosis in Rio Negro, Argentina, were studied by means of ultrasonography (U.S.) and double diffusion for arc five (dd5). The population included 272 inhabitants from Pilcaniyeu, 55 patients from the Zonal Bariloche Hospital admitted for diseases other than hydatidosis and 577 recruits from different departments of the Rio Negro Province. A chest X-ray was performed in every recruits. 47 (5.20%) cases of hepatic hydatidosis were detected by U.S.; 11 (1.22%) were detected by dd5 (p 0.01); 2 (0.34%) were detected by chest X-ray. Due to the low sensitivity of dd5 a presumptive diagnosis of hydatidosis should be made in every patient proceeding from an endemic area with a liver cyst diagnosed by ultrasound, even if dd5 is negative. U.S. must be incorporated as an elective method associated with chest X-ray and dd5 in epidemiological yielding and monitoring of control programs for hydatidosis.
Subject(s)
Echinococcosis/diagnosis , Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Echinococcosis/diagnostic imaging , Echinococcosis/prevention & control , Echinococcosis, Hepatic/diagnosis , Echinococcosis, Pulmonary/diagnosis , Female , Humans , Male , Middle Aged , Radiography , Serologic Tests , UltrasonographyABSTRACT
The number of human cases with hydatidosis in the Province de Río Negro in the period 1969-1983 was determined by a retrospective exam of the registers at the Provincial Ministry of Health. From 1216 cases the yearly numbers between 59.4 in 1969-78 and 124.4 cases between 1979-83. This implies a yearly of 3.24 X 10,000 and with the most frequent localization in the liver. The average days of hospitalization was 29.2 per patient. The highest correspond to the southern departments of the Province 6.57 X 10,000 in the 40 Sanitary Zone. Eighty two and thirty five per cent of the cases had immunological confirmation with DD5, before surgery. The census allowed us to determine that rates of prevalence were in school children 1.09%, in conscripts, 0.28% and in adult settlers 2.58%. The average of positive serological cases in the province, was 0.77%. The yearly number of cases diagnoses is estimated in 4% of the existent carriers and is the highest in the world. The followup and control of children who had surgery, allowed us to detect that 30% of the cases presented new hydatid cyst before the 5 year lapse. Different factors put Río Negro with the highest rates of denounced human hydatidosis. These are related to living conditions around cattle farms and the socio economics and educational factors, which are analyzed in this paper. Modifications in the Programme for the control of hydatidosis has been put into action by the sanitary authorities.
Subject(s)
Echinococcosis/epidemiology , Adult , Argentina , Child , Child, Preschool , Echinococcosis/diagnosis , Echinococcosis, Hepatic/epidemiology , Echinococcosis, Pulmonary/epidemiology , Female , Humans , Male , Retrospective Studies , Serologic TestsABSTRACT
In this paper we attempt to present a general view of the situation of hydatidosis in the Province of Rio Negro, Argentina, considering the magnitude of infection in man and dog. Because of its seriousness a 10 year program for the control of hydatidosis has been carried out, which included veterinary and medical care. The number of human cases with hydatidosis in the period 1981-1988 was determined by a retrospective study of the registers of Public Health. From 1188 cases registered in the period, the annual numbers varied between 152 in 1981 and 104 in 1988. This implies an incidence rate of 40 x 100,000. The most frequent localization observed was in the liver. The average days of hospitalization has decreased to 15.8 per patient. Screening seroepidemiological surveys using DD5 allowed us to determine that the prevalence rate was in some departments of 2330 x 100,000. Also included are the results, up to now, of 10 years of field work done in the program area.
Subject(s)
Echinococcosis/prevention & control , Adolescent , Adult , Animals , Argentina/epidemiology , Child , Child, Preschool , Dogs , Echinococcosis/epidemiology , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , Prevalence , Socioeconomic FactorsABSTRACT
Se efectuaron catastros ecográficos en 132 pobladores asintomáticos de la Provincia de Rio Negro, Argentina. Un total de 76 casos fueron clasificados como probales hidatidosis. Se sometió a cirugía a 30 pacientes, confirmándose el diagnóstico en 28 casos (93.34% especificidad)