TY - JOUR N2 - Buffalo calves have a high adverse effect on public health, specifically zoonotic Giardiasis in Egypt. The current study was carried out to investigate the use of enzyme-linked immunoelectrotransfer blot technique (EITB) as a preliminary step for the diagnosis of giardiasis before genotyping. For this purpose, fecal and blood samples were collected from diarrheic calves and workers in closed and non-closed beef buffalo farm. Zoonotic Giardia assemblage A was isolated from both diarrheic children and their close contact calves while the calves were infected by animal genotype assemblage E under low contact conditions. This was identified after the amplification and sequencing of a 292 bp fragment of 16S-rRNA ribosomal unit from 20 children and 28 calves Giardia isolates using nested PCR. Fractionation of different isolated Giardia assemblage and identification of specific fraction versus anti-Giardia-IgG antibodies in infected humans or animals using EITB revealed that ?-1 giardin antigen with molecular weight ranged 29-34KDa. This specific immunogenic assemblage was fraction-related where it reacted specifically versus antibodies in sera of humans or animals infected by this assemblage and did not cross-react with giardin of other assemblage or with sera of non-infected cases. The results of the current study highlighted the use of EITB as a preliminary investigation before genotyping in the identification of zoonotic giardiasis. VL - 10 EP - 428 SN - 23224568 (ISSN) UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096980954&doi=10.36380%2fscil.2020.wvj52&partnerID=40&md5=8c1d3aa9a0a7db7c6acdbd1b74b8550f Y1 - 2020/09/25/ SP - 421 IS - 3 JF - World's Veterinary Journal PB - Scienceline Publication, Ltd TI - The Use of Giardia immunogenic Protein Fraction to Distinguish Assemblages in Humans and Animals KW - Buffalo calves KW - Genotype KW - Giardia KW - Human KW - Immunoblot KW - Nested PCR ID - eprints508 A1 - Ramadan, R. M. A1 - Khalifa, M. M. A1 - Kamel, N. O. A1 - Abdel-Wahab, A. M. A1 - El-Bahy, M. M. AV - public ER -