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  • Title: Cystic echinococcosis in water buffaloes: epidemiological survey and molecular evidence of ovine (G1) and buffalo (G3) strains.
    Author: Capuano F, Rinaldi L, Maurelli MP, Perugini AG, Veneziano V, Garippa G, Genchi C, Musella V, Cringoli G.
    Journal: Vet Parasitol; 2006 Apr 30; 137(3-4):262-8. PubMed ID: 16480832.
    Abstract:
    A survey of cystic echinococcosis (CE) in the water buffalo (Bubalus bubalis) of the Italian Mediterranean breed was carried out in Campania, a region of southern Italy. In addition, a molecular study was performed on 48 hydatid cysts coming from 48 water buffaloes in order to determine the Echinococcus granulosus strain(s) present in this host. Out of a total of 722 water buffaloes examined for CE, 76 (10.5%) were found infected. The average number of cysts per buffalo was 4.3 (minimum 1, maximum 45). Seventeen buffaloes had hydatid cysts only in the liver (with an average of 5 cysts/liver), 34 only in the lungs (with an average of 1.8 cysts/lungs), and 25 buffaloes had cysts both in the liver and in the lungs. Fertile cysts were found in 10 (13.2%) out of the 76 positive buffaloes. The sequencing of the mitochondrial cytochrome C oxidase subunit 1 (CO1) gene of the 48 hydatid cysts produced sequences of 419 bp for each sample analysed. For 33 samples, alignment of the obtained sequences with those present in GenBank showed a total homology with the common domestic sheep strain G1; for 15 samples, sequences obtained showed 100% homology with buffalo strain G3. The findings of the present survey represent the first epidemiological and molecular comprehensive studies on CE in water buffalo from an endemic area for E. granulosus.
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