Hydatidosis is a zoonotic, helminthes parasitic disease that cause veterinary and human problems due to economic burden. Amis of the current study was to estimate the prevalence rate of hydatidosis infecting different organs of sheep slaughtered in street. In addition, investigate the relationship between age, gender and the infected rates in some Baghdad areas during a period from may to end of July 2018.A total of 188 sheep was examined for detection of Hydatid cyst in different organs using macroscopic and microscopic examination The overall prevalence rate of 47.9% was recorded. The results indicate non significant differences according to age and gender, the highest rate 57% was observed in sheep more than one year old compared with small ages 31.3%. The females showed the highest rate 59.3% while the male recorded 30.7%. The most affected organ was the liver 64.4% followed by the lung 25.6% and finally the spleen 10%. Conclusion of this study indicates the higher prevalence rate lead to the necessity for control programs against hydatidosis includ preventing of illegal slaughtering.
