There are  some  parasitic  cysts  occur  in  animals  and human , one of  the most  important  is  the  hydatid  cysts   .  More  than  thirty  years  hydatidosis  was  followed  in Mosul  , Baghdad ,  Al- Qa-disyia , Babylon and  Najaf  .  Hydatid  Cysts were  collected  from  animals  of  slaughter  houses  of  these  provinces  , while  Human  cases  were  followed  in  surgical  rooms of  main hospitals .  Sheep  hydatidosis  was the  highest  percent  ( 45% )more  than  other  animals , while  the  lowest  was  in buffalo  5% .Fertile  hydatid cysts  and  sterile  cysts  were  identified  by  eosin  stain , so  the  highest  percent  of  fertile  cysts  were   in  sheep  74%  while  the  lowest   was  in cattle  22% , while  sterile  cysts  were  highest  in  cattle  .Viability of  theprotoscolices were examined by  eosin stain .Beside hydatid  cysts two  other  cysts were  recorded  depend  on morphologic  and  pathologic   Characterizations  , therefore  hydatid cyst  of  Echinococcusgranulosus was  the  highest  percent   , but  there are other  cysts  were  diagnosed  as Cysticercustenuicollis( Larval  stage  of  Taeniahydatigena )  .  Coenuruscerebralis(Larval  stage  of  Multicepsmulticeps ).

Serological identification and blood pictures were done for specific IgM and IgG.10% of cases were positive IgM of Toxoplasmosis because have 10 IU/ml (mean) in comparison with control group were 0.11 IU/ml (mean). On other hand 20% of diagnosed cases were positive IgG of Toxoplasmosis because have 11 IU/ml .Two cases were followed for their history one from group IgM and other IgG , first one suffered from three abortion and now have five child three of them healthy while two have congenital defects. Second case (IgG positive ) have four abortion and now have three child , two healthy and one have congenital defect. Blood picture reveal 40% suffered from Normocytic anemia , these cases classified to three groups , first Toxoplasma group 30% (positive in ELISA test). Second group (Unknown causes), these cases not only normocytic anemia also have high total leukocytes 17 x10 (mean) and high MCV (103 ft). Third group have low MCV 78ft.

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