Document Detail

Heterogeneous distribution of human cystic echinococcosis after a long-term control program in Neuquén, Patagonia Argentina.
MedLine Citation:
PMID:  17317277     Owner:  NLM     Status:  MEDLINE    
The present study is the first comprehensive analysis of human cystic echinococcosis (CE) epidemiological data carried out in the province of Neuquén, Patagonia Argentina, after 34 years of uninterrupted control program. A retrospective study of all the official records of confirmed human CE cases between 1995 and 2004 was carried out. A total of 1107 cases were reported. The overall mean annual incidence (MAI) was 24.4 per 100,000 inhabitants for the total population and 9.7/100,000 in the 0-14 year group. Distribution of cases by age and sex as well as frequency of cyst locations was analysed. Children accounted for 13.3% of total cases, indicating active transmission of the disease. Territorial distribution of cases was highly heterogeneous: MAI per 100,000 ranged from 7.9 in the Metropolitan Sanitary Area to 78.4 in the western rural areas. Higher values were recorded in small communities as Pilo Lil (800/100,000). MAI showed a significant decrease from 1995 to 1999 (43.9-18.8) but remains stable from 2000 to 2004 (15.9-15.5). These results suggest that standard control measures, despite long-term implementation, are not able to produce a sustained improvement of the epidemiological status of the disease. Further studies about local transmission cycles, definite and intermediate hosts present, Echinococcus granulosus strains or cultural behaviours in small communities are required in order to adequate the control actions in Neuquén.
Nora B Pierangeli; Silvia V Soriano; Irene Roccia; Juan Giménez; Lorena E Lazzarini; María S Grenóvero; Carlos Menestrina; Juan A Basualdo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-01-24
Journal Detail:
Title:  Parasitology international     Volume:  56     ISSN:  1383-5769     ISO Abbreviation:  Parasitol. Int.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-03-12     Completed Date:  2007-06-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9708549     Medline TA:  Parasitol Int     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  149-55     Citation Subset:  IM    
Cátedra de Microbiología y Parasitología, Escuela de Medicina, Universidad Nacional del Comahue, Buenos Aires 1400, 8300, Neuquén, Argentina.
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MeSH Terms
Age Distribution
Argentina / epidemiology
Child, Preschool
Echinococcosis / epidemiology*,  parasitology,  pathology,  prevention & control*
Infant, Newborn
Middle Aged
Program Evaluation*
Sex Distribution

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