Parasitology ILA Flashcards
______ intestinal infections are commonly transmitted through contaminated food and water
protozoan
usual route of transmission for protozoan GI infections
fecal-oral
sx’s include mild to severe diarrhea; nutritional deficiencies if small bowel affected
protozoan GI infection
part of protozoan life cycle where its passed in feces and infective
cyst
part of protozoan life cycle that involves feeding, motility, and replication
trophozoite
transmission through oocytes and GI-localized infection; handling of farm animals and feces
Cryptosporidium species
can spread by working on farms or daycares; causes watery diarrhea
Cryptosporidium species
fecal-oral transmission
detect by trophozoites in blood engulfed in RBCs or cysts in stool
Entamoeba histolytica
has a wide spectrum of infection from asymptomatic to severe (GI localized and extraintestinal)
Entamoeba histolytica
flask shaped ulcers in colon
bloody diarrhea
liver abscess
Entamoeba histolytica
Rx Entamoeba histolytica infection:
Metronizadole (produces free radicals that inhibits bacterial/protozoa DNA synthesis)
found in fecally contaminated surfaces or in water
found as cyst or trophozoite
Giardia
Common with hikers/backpackers who drink from contaminated streams/bodies of water; GI localized infection
Giardia
sx’s include: Nausea, bloating, flatulence, foul smelling, fatty diarrhea, non-bloody
Giardia
to Rx Giardia infection:
Metronidazole
Giardia