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Parasites
Microbiology
| Question | Answer |
|---|---|
| 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 |