Abstract
Hydatidosis or cystic cystic echinococcosis (CE) is caused by Echinococcus granulosus (EG) complex, which infecting humans
especially childrens, and several species of wild and domestic animals including; camels, cattle, equines, sheep, and goats,
infection come from the consumption of Echinococcus granulosus eggs with contaminated food, and therefore the syndrome is of
public health significance, there are several genotypes nearly ten from genotype 1 to genotype 10, which are found all over the
world based on genetic diversity; there are several studies are constructed on the genetic diversity of hydatid cyst on Egyptian
camels (Camelus dromedaries) at Qalyubia Governorate, Egypt, and this study is the continuation of previous works in this field of
work. In this study a total of 55 hydatid cysts samples were collected from the lungs of camels admitted to abattoir of Qalyubia
Governorate, Egypt. Brood capsules, free solitary scolices, and sediment of hydated fluid, were the source of DNAs, which was
extracted by the commercial kit. For polymerase chain reaction (PCR) amplification, two gene primers, the cytochrome C oxidase
subunit 1 (cox1 gene), and the mitochondrial NADH dehydrogenase subunit 1 (NADH1 gene) were used and the partial sequences
obtained were analyzed by gene sequencing, and then phylogenitic analysis was carried out. Results of this study showed that;
90.5% (n = 49/55) of the samples were identified as Echinococcus canadensis genotype 6 (G6), and 9.5 % (n=6/55) were identified
as Echinococcus ortleppi (G5) which newly imported from Sudan for slaughtering. The presence of Echinococcus ortleppi of the
cattle isolate (G5) in the Egyptian camels was concluded for the first time.
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