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Parasites

Microbiology

QuestionAnswer
Intestinal tract protozoa Entamoeba histolytica, Giardia lamblia, Coccidia (Cryptosporidium spp, Isospora belli)
Urogenital protozoa Trichomonas vaginalis
Blood and Tissue protozoa Plasmodium spp, Naegleria, Acanthamoeba spp, Toxoplasma gondii
Nematodes Enterobius, Ascaris, Strongyloides, Trichinella, hookeworms(Ancylostoma, Necator)
Cestodes Taenia, Echinococcus
Malaria belong to what protozoan group? Coccidia
Has both Cyst & troph forms E. histo, Giardia
Cysticercosis Taenia spp
Chorioretinitis Toxo gondii
Most protozoa reproduce by (1), while yeasts reproduce by (2) and molds reproduce (3) (1) fission (2) budding (3)asexually (conidia) or sexually
Flagellate Giardia, T vag
Sexual & asexual repro cycles Coccidia spp
May cause malabsorption; unwashed veg/grown in manure; old man giardia
Most common intestinal helminth Ascaris lumbricoides
Classic = postcoital bleeding in female T vaginalis
Acute dz = flu-like s/s Toxo
Thermophilic Naegleria
Person-to-person, fomite, or aerosol Enterobius vermicularis
Wheezing Ascaris, hookworms
Adult worms lay up to 20,000 eggs/day hookworms (ancylostoma; Necator)
Diagnosis: direct exam of stool Hookworms
cutaneous larva migrans Hookworms
anemia Hookworms
immigrants from endemic areas Strongyloides, Taenia
freezing reduces transmission Trichinella
worms of hogs, beef, fish, dogs and cats Taenia
transform into new larval stage, can lead to overwhelming dissemination Strongyloides
T. vag inhabits: female urethra & vagina (5-20%) & male urethra and prostate (2-10%)
Coccidia: bloody diarrhea = (1); watery = (2) (1) Large bowel involvement; (2) small bowel
AIDS parasite isospora belli
Created by: Abarnard
 

 



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