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Saliva and sera IgA and IgG in Egyptian Giardia-infected children

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Abstract

Giardiasis is a gastrointestinal infection of wide distribution that is more prevalent in childhood. Easy and rapid diagnosis of giardiasis is essential for reduction of this infection. This cross-sectional study included 62 children in which collection of saliva, stool and serum samples was performed. An enzyme-linked immunosorbent assay (ELISA) technique was evaluated to detect IgA and IgG responses in both saliva and serum samples. Twenty-two children were positive for Giardia duodenalis infection by direct examination of faecal specimens, 20 non-infected and 20 infected with other parasites. Salivary and serum IgA and IgG responses against G. duodenalis infection were significantly higher in Giardia parasitized than non-Giardia parasitized children (p < 0.001). This concludes that specific salivary IgA may serve as a diagnostic tool and specific salivary IgG as a screening tool in monitoring the exposure of various populations to Giardia duodenalis. The advantage of salivary assays over serum immunoglobulin assay is being easy and non-invasive in sampling technique which is important especially for young children.

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Correspondence to Eman Fawzy Halawa.

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El-Gebaly, N.S.M., Halawa, E.F., Moussa, H.M.E. et al. Saliva and sera IgA and IgG in Egyptian Giardia-infected children. Parasitol Res 111, 571–575 (2012). https://doi.org/10.1007/s00436-012-2869-y

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  • DOI: https://doi.org/10.1007/s00436-012-2869-y

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