[Familial outbreaks of fascioliasis: usefulness of serologic investigation by enzyme immunoassay].
BACKGROUND
To assess the usefulness of an enzyme immuno-assay test for the diagnosis of two familial outbreaks of Fasciola hepatica parasitosis in the Zamora area, where watercress are a normal part of the diet.


METHODS
The microbiological diagnosis of two familial outbreaks of fascioliasis was analyzed, which included the search for eggs in feces by the Kato technique and two serologic tests, one screening test by indirect hemagglutination, and a confirmatory test by enzyme-immunoassay in 12 patients.


RESULTS
Five out of the six seropositive patients had eggs detected in their feces. To note that two of the patients with eosinophilia that excreted eggs--one asymptomatic and the other with abdominal pain--had a positive result in the EIA test only and with high titers.


CONCLUSIONS
The EIA test is useful for the diagnosis and study of fascioliasis outbreaks to interpret the significance of low titers in the screening test in patients with eosinophilia.
Rodríguez Hernández
J
J
Sección de Microbiología, Hospital INSALUD, Zamora.
Canut Blasco
A
A
Brezmes Valdivieso
M F
MF
Martín Arribas
M I
MI
Arias Paciencia
M
M
Santana Rodríguez
E
E
Martín Sánchez
A M
AM
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004196:Disease Outbreaks; D005192:Family Health; D005211:Fascioliasis / Q000175:diagnosis* / Q000453:epidemiology; D005243:Feces / Q000469:parasitology; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008875:Middle Aged; D012698:Serologic Tests
Brotes familiares de fascioliasis: utilidad del estudio serológico por enzimoinmunoanálisis.