E. histolytica Transmission Fecal-oral Morphology Oocyst Troph: bullseye shaped nucleus; RBC in cytoplasm Clinical Findings Asymptomatic carrier Bloody diarrhea Liver abscess Diagnosis Fecal smear Serology CT Scan G. lamblia Transmission Fecal-oral Morphology Oocyst Flagellated trophozoite Clinical Findings Foul smelling,greasy diarrhea Diagnosis Fecal smear Immunoassay Isospora spp. Transmission Fecal-oral Morphology Oocyst Clinical Findings Severe diarrhea and …
Known as flukes Requires 2 intermediate hosts exc. Schistosomes 1st – snail 2nd : FISH H. heterophyes,C. sinensisO. felineus CRAB P. westermani PLANT F. hepaticaF. giganticaF. buski SNAIL E. ilocanum BLOOD FLUKES S. japonicum – small lateral knob; oriental blood fluke; katayama syndrome; swimmer’s itch; snail fever S. mansoni – prominent lateral; smallest blood …
Tapeworm; flat and ribbon-like Hermaphrodite; lack digestive organs Body Scolex (head) Neck (region of growth) Proglottids (strobila) Taenia spp Taenia solium Taenia saginata Common name Pork Tapeworm Beef tapeworm Intermediate host Pig; man Cattle Scolex w/ rostellum armedwith 2 rows of large &small hooklets No rostellar hooks4 prominent acetabula Length <7 meters <25 meters …
SUBCUTANEOUS Loa loa Mansonella streptocerca Onchocerca volvulus SEROUS CAVITY Mansonella spp. LYMPHATIC Wuchereria bancrofti Brugia malayi W. bancrofti B. malayi Mean length (um) 290 222 Cephalic space:breadth 1:1 2:1 Sheath in giemsa Unstained Pink Nuclei Regularly spaced;separate Irregularly spaced;overlapping Tail Single row of nuclei;does not reach tail end Single row of nucleireaches the tail …
Characteristics Cylindrical, elongated, & bilaterally symmetrical Anterior end equipped with hook, teeth, plates and papillae Alimentary tract is simple, extending from mouth to anus. NO CIRCULATORY SYSTEM UNHOLY THREE Hookworm Ascaris lumbricoides Trichuris trichiura HEART-LUNG MIGRATION Ascaris lumbricoides Strongyloides stercoralis Hookworm SMALL INTESTINE Capillaria philippinensis Hookworm Ascaris lumbricoides Trichuris trichiura Strongyloides stercoralis LARGE INTESTINE Enterobius …
COLLECTION STOOL COLLECTION (TYPICAL) one spx. collected every other day total of three collected in 10 DAYS Diagnosis of Amoebiasis six specimens in 14 DAYS If patient in therapy of BISMUTH, BARIUM, & MINERAL OIL collect PRIOR TO THERAPY not until 5-7 or 4 – 5 DAYS after completion of therapy DELAYED FOR 2 WEEKS …
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PRINCIPLES OF SPECIMEN COLLECTION Major goal of microbiology laboratory – aid diagnosis of infectious disease Goal of specimen collector – maintain viability w/ minimal contamination FUNDAMENTALS Collect in acute phase of infection and before antibiotics administration (or within 2-3 days for viral infection) Correct anatomic site for collection Proper technique and supplies w/ minimal contamination …
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