Abdominal angiostrongylosis in southern Brazil--prevalence and parasitic burden in mollusc intermediate hosts from eighteen endemic foci.
Mem Inst Oswaldo Cruz
; 92(1): 9-14, 1997.
Article
em En
| MEDLINE
| ID: mdl-9302406
Angiostrongylus costaricensis is a parasitic nematode of rodents and molluscs are the intermediate hosts. Nocturnal collection of molluscs and search for infective third stage larvae of A. costaricensis was carried out in 18 endemic foci identified by the notification of a confirmed diagnosis in human biopsies or surgical specimens. Molluscs were digested in acidic solution and isolation of larvae eventually present was done in a Baermann funnel. Larvae identified by the presence of a delicate groove in the tail were counted to assess the individual parasitic burden. Four species were found infected, with ranges of prevalence in parenthesis: Phyllocaulis variegatus (7% to 33.3%); Bradybaena similaris (11.7% to 24.1%); Belocaulus angustipes (8.3%) and Phyllocaulis soleiformis (3.3% to 14.2%). Parasitic burden varied from 1 to 75 with P. variegatus, 1 to 98 with B. similaris. 1 to 13 with B. angustipes and 1 larvae in each of two specimens of P. solciformis. P. variegatus was present in all sites and was found infected with the highest prevalence figures and the highest individual parasitic burdens. These data stress the importance of veronicellid slugs as intermediate hosts for A. costaricensis in the endemic areas in Rio Grande do Sul, Brazil.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções por Strongylida
/
Doenças Endêmicas
/
Interações Hospedeiro-Parasita
/
Angiostrongylus
/
Moluscos
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Limite:
Animals
/
Humans
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Mem Inst Oswaldo Cruz
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil