MICR 2533 Midterm Chart & Info

MICR 2533 Midterm Chart & Info - micro 2 midterm...

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micro 2 - midterm micro 2 - midterm - FA05 PROTOZOA - pathogenic protozoa (table 5-5) Scientific & Common Name Epidemiology Disease Producing Form & Location in Host How Infection Occurs Major Disease Manifestations, Diagnostic Stage & Specimen of Choice Entamoeba Histolytica (amebic dysentery) Worldwide Trophozoites in large intestinal mucosa, liver or other tissues Ingestion of cyst in fecally contaminated food or water Enteritis w/ abdominal pain DIAG : cysts & trophozoites in feces Naegleria fowleri (primary ambeic [acute] meningocephalitis {PAM}) Worldwide Amebic trophozoites in brain Accidental entrance of free living water-borne trophozoites through nasopharynx mucosa Rapid death Diemtamoeba fragilis (none) Worldwide Trophozoites in large intestine Ingestion of trophozoites(?) Diarrhea. DIAG : trophozoites in feces (no cysts formed) Giardia lamblia (traveler's diarrhea) Worldwide Trophozoites in ( small intestines primarily and then peristalis moves it to the) large intestinal mucosa Ingestion of cysts in fecally contaminated food or water Mild to severe dysentery; malabsorption syndrome DIAG : cysts & trophozoites in feces Trichomonas vaginalis (trich) Worldwide Trophozoites in urethra or vagina Sexual contact Irritating, frothy discharge in women; menusually asymptomatic. DIAG : trophozoites in urine or vaginal smear (no cysts formed) Leishmania tropica (Oriental boil) Mediterranean area, Asia, Africa, Central America Amastigotes in macrophages of skin lesions Bite of phlebotomus spp. (sandfly) Self-healing skin lesion DIAG : amastigotes in macrophages around skin lesion Page 1
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micro 2 - midterm Leishmania mexicana (New World utaneouis leishmaniasis) Mexico, Central & South America Amastigotes in macrophages of skin lesions Bite of phlebotomus spp. (sandfly) Self-healing skin lesion; some species cause diffuse cutaneous leishmaniasis Leishmania brazilienis (New World leishmaniasis espundia ) Central & South America, especially Brazil Amastigotes in macrophages of skin lesions and mucocutaneous tissue Bite of phlebotomus spp. (sandfly) Self-healing skin lesion, later ulceration of cephalic mucocutaneous tissue DIAG : recovery of amastigotes from lesion Leishmania donovani (kala-azar; visceral leishmanianis) Mediterranean asrea, Asia, Africa, South America Amastigotes in macrophages of skin lesion and somatic organs Bite of phlebotomus spp. (sandfly) Initial skin lesion, later daily double-spiking fever, enlarged liver & spleen, death in late stages DIAG : L.D. bodies in early lesion organ tissue biopsy later Trypanosoma brucei gambiense (West African sleepin sickness) West Africa Trypomastigotes in blood, lymph nodes, later in CNS Bite of Glossina spp. (tsetse fly) Fever, lymphadenopathy (Winterbottom's sign) enlarged spleen & liver, lethargy & death. More acute than T. giamiese DIAG : Trypomastigotes in blood smear Trypanosoma brucei rhodesiense (East African sleepin sickness) East Africa Trypomastigotes in blood, lymph nodes, later in CNS
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MICR 2533 Midterm Chart & Info - micro 2 midterm...

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