Ascaris lumbricoides infection

The traditional diagnosis of Ascaris infection is the identification of eggs in faeces or the worm itself. The serological methods available are not regularly used for diagnosis of ascariosis in patients, but, in general, been utilized for epidemiological studies in various populations.

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(Haswell-Elkins et al. 1992; van Knapen et al. 1992; Lynch et al. 1993). On individual bases, immunodiagnosis has been of little help due to cross-reactivity with other helminthic antigens. Recently, Chatterjee et al. (1996) reported improved sensitivity and specificity by measuring specific IgG4 against a fractionated excretory/secretory antigen.

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