Schistosomiasis mansoni in areas of low transmission. Epidemiological characterization of Venezuelan foci
Mem. Inst. Oswaldo Cruz
;
97(suppl.1): 5-10, Oct. 2002. tab
Article
Dans Anglais
| LILACS
| ID: lil-325023
RESUMO
Severe schistosomiasis is a rare event in Venezuela nowadays, after a successful national campaign by the Schistosomiasis Control Program. Unfortunately, this program has practically disappeared, and snail surveillance in field is not a priority, anymore. Thus, schistosomiasis has become a neglected disease in this country. However, surveys in different populations from the endemic area have shown particular epidemiological features described herein. In five communities we evaluated 2,175 persons and searched for the presence of Biomphalaria glabrata snails. Some markers were used for classifying schistosomiasis foci mean age of the persons with Schistosoma mansoni eggs in the stools, serological tests, presence of B. glabrata snails, and intensity of infection. Places without B. glabrata snails and with few schistosomiasis cases were defined as "past transmission sites"; a site with abundant snails but few cases was defined as "potential risk"; "new transmission" foci were characterized by the presence of infected snails and young people passing eggs in the stools. A "re-emergent" focus has shared these last features, showing in addition a place where schistosomiasis had been reported before. Recent evidences of active transmission with the increasing dispersion of B. glabrata snails, point out the necessity for the re-establishment of the Schistosomiasis Control Program in Venezuela
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Schistosomiase à Schistosoma mansoni
Type d'étude:
Étude de prévalence
/
Facteurs de risque
Limites du sujet:
Animaux
/
Humains
Pays comme sujet:
Amérique du Sud
/
Vénézuela
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2002
Type:
Article
/
Congrès et conférence
Pays d'affiliation:
Venezuela
Institution/Pays d'affiliation:
Fundasalud del Estado Carabobo/VE
/
Instituto Venezolano de Investigaciones Científicas/VE
/
Universidad Central de Venezuela/VE
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