Objective: 1-Isolation and diagnosis of mites species in sheep. 2-To study the pathological changes in the skin. 3-To know the epidemiological distribution of Scabies in human. Materials and Methods: Scrabing was collected from infected area of skin of sheep and human. These specimens were treated with 10% KOH to remove scales and hairs, and then fixed on slides for diagnosis. Biopsies were taken from infected skin for pathological study. Results: Three species of mites were diagnosed on sheep, Sarcoptes scabiei, Psoroptes ovis and Chorioptes sarcoptes, with percents of infection 34.95%, 58.27%, 4.71% respectively. Gross pathological changes observed were, toughness, dryness, fissuring of the skin with white scales, while microscopical pathological changes revealed, hyperkeratosis, acanthosis, infiltration of chronic inflammatory cells (eosinophils, macrophages and lymphocytes) and oedema in the dermis. Age group of 11-30 years of age were highly affected (28.2%). Housewives were the highest percent among other occupation (29.1%). Conclusions: Scabies is a big public health problem and should be looked after among sheep as well as human beings.

Cutaneous leishmaniasis is an endemic diease in the middle and south of Iraq. distribution of infection was studied in two governorates (diwanya and hilla), total number of patients attended to the dermatology center in three months (December 2016, January, February 2017) in diwanyia was 1940, 132 were cutaneous leihmaniasis (10.7%) while in hilla 1757 patients were attended to the dermatology center at the asme months, cutaneous leihmaniasis cases were 42 (2.4%). total number of cutaneous leishmaniasis was 208, 132 for diwanya 76% while for hilla was 42, 24%.infected males were higer than females in both cities 74.3%,25.7% respectibely. Age variations reveal all infected cases were in all ages but high percent were in age of ten years old and below 35.6%. no cases were recorded during summer months and the peak of this sisease was in January 28.5%, February 30.9%. pathological lesions were classified grossly as follows, papule (redness and swelling ) pustule (redness with crusts sometimes with pus)ulcer (it was no crusts with shallow ulceration irregular margin)scar formation. Hematological study revealed increase in number of erythrocytes and variation in size (poikilocytosis). Treatment were mostly, systemic injection with topical treatment, several types of ointment.

Speciemens  of hydatid cysts were collected  from infected liver and lung of cattle , multilocullar cysts , different sizes , milky in coulor , some  of  them  superficial  while others embedded  in the parenchyma  of the organs .                                         Bacteria were isolated from liver and lung infected with hydatid cysts in cattle slaughterd in Diwania slaughter house. S.aureus and C.Pyogenes were isolated from  the liver , while Streptococcus spp  and C. pyogenes were isolated from lung hydatid cysts .                                                                                                         Bacterial colonies were identified by culturing on enriched and selective media with various biochemical tests . All bacterial species were sensitive to Ciprofloxacin and Genta-      mycin While it is resistant to  Carbencillin and  Ampicillin.                                                                                                               Histopathological  study  revealed   the  hydatid cysts in liver and the lung were  surrounded by  fibrous  tissue . Coagulative necrosis were noticed  in liver tissue  while casouse necrosis was  in lung  tissue .

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 ).