Intestinal Protozoa Balantidium coli

Balantidium coli Is a parasitic species of ciliate protozoa that cause balantidiasis or Balantidium dysentery. Balantidium coli has two developmental stages, a trophozoite stage and a cyst stage. The cyst is the infective stage measures about 50 to 70 µm in diameter, characterized by the presence of a large kidney-shaped macronucleus. The trophozoite is oval with 2 nuclei and measures approximately 50 to 100 µm long and 40 to 70 µm wide.

B.coli Cyst

B. coli Trophozoite

Tissue Protozoa Toxoplasma gondii

Toxoplasma gondii Habitat: reticulo-endothelial system, monocyte, and muscle fiber and cause toxoplasmosis. Humans can acquire Toxoplasma gondii infection by ingestion cyst or sporylated oocyst Cyst: precipitated in flesh of cow. Sporulated oocyst: cat feces. Intermediate host: Human and cat. Definitive host: Cat. The tachyzoites are crescent-shaped and measure about 5 µm in length. Diagnostic stages: Diagnosis also can be done by detection antibody IgG, IgM, IgE and IgA.

Tachyzoites

Trichomonas vaginalis Urogenital Protozoa Trichomonas vaginalis

Trichomonas vaginalis Is the most common cause of vaginitis, inhabit the urogenital system There is no cyst stage but only have trophozoite stage. The trophozoite measures about 15 x 10 µm. The trophozoite has a single nucleus and four flagella and undulating membrane. Diagnosis: Male: finding trophozoite in urethral prostatic discharge Female: finding trophozoite in vaginal discharge.

T. vaginalis Trophozoite

Medical parasitology lab. Faculty of health sciences Medical Laboratory Sciences Department Medical parasitology lab. Med ical Entomology

Medical Entomology Entomology: the science that concerned in the study of insects. There are many of medically important insects, that cause disease to human by itself or by transporting infective stage of another parasite. Pediculus humanus “Lice” Fleas Hard ticks & Soft ticks Mites Cimix lectularis “Bed Bug” Sand fly Tse tse Anopheles mosqueto

Pediculus humanus “Lice” Cause pediculosis. Lice egg

Pediculus humanus humanus :– the body louse Pediculus humanus capitis :head louse

Fleas

Hard Ticks & Soft Ticks

Hard Ticks & Soft Ticks

Mites Cause scabies Mite egg

Cimix lectularis “Bed Bug” بق الفراش حشرة صغيره (غير مجنحة وطولها (4 - 7 مليمتر) ولونها يميل إلى البني الداكن وبيضاوية الشكل) تمص الدماء أثناء الليل وتسبب الحكة الشديدة والحساسية والإرهاق بسبب عدم النوم، تتغذى على الدم خصوصا أثناء نوم الإنسان ليلا أو نهاراً في الغرف المظلمة