Parasites of public health importance

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Author:
rpanek
ID:
305045
Filename:
Parasites of public health importance
Updated:
2015-07-10 14:25:06
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para zoo
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Description:
zoonosis
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  1. What the two parasites are our primary concern due to regular exposure
    • Toxocara sp.
    • Ancylostoma sp.
  2. T. canis and T. cati cause these two disease due to migration
    • Visceral larval migrans - VLM (anywhere in the body)
    • ocular larval migrans - OLM (eye only)
  3. A. braziliense and A. caninum what two terms are used for this infection, one is general the other is specific to humans
    • Cutaneous larval migrans
    • creeping eruptions
  4. What is the percentage of people in the US that may be infected with T. canis or T. cati/mystax
    4 - 20%
  5. What is the etiology for "over eating disease"
    Clostridium perfringens
  6. T. canis and T. cati (mystax)
    Disease:
    Transmission:
    Role of D and C in transmission:
    • VLM, OLM, and covert larval toxocariasis
    • ingesting contaminated soil containing eggs
    • environmental contamination egg shedding
  7. Lyme Disease
    Vector:
    Etiology:
    Symptoms:
    • Ixodes scapularis
    • Borellia burgdorferi
    • joint ill, erythran migrans
  8. Bayliascaris procynois
    Disease:
    Prevalence:
    Transmission:
    Definitive host:
    Role of D/C in transmission:
    • serious vesceral disease, myocarditis, encephalitis, death, ocular disease.
    • rare
    • ingesting contaminated soil containing eggs
    • raccoon
    • environmental contamination - egg shedding -
  9. Dirofilaria immitis
    Disease:
    Prevalence:
    Transmission:
    Role of D/C in transmission:
    • Pulmonary coin lesions "heartworm dermatitis"
    • rare, but seen in cadavers in med school
    • Culex mosquito
    • Dog is reservoir for S1 stage
  10. Ancylostoma caninum/tubaeformae
    Disease:
    Prevalence:
    Transmission:
    Role of d/c transmission:
    • Cutaneous larval migrans, verminous pneumonia, verminous eosinophilic colitis
    • usually due to A. braziliense
    • skin penetration
    • environmental contamination
  11. Ancylostoma braziliense
    Disease:
    Prevalence:
    Transmission:
    Role of D/c in transmission:
    • cutaneous larval migrans, develop "raised serpiginous tracts" on skin. verminous pneumonia
    • common
    • skin penetration
    • environmental contamination
  12. Strongyloides stercoralis
    Disease:
    Prevalence:
    Transmission:
    Role of d/c in transmission:
    • Diarrhea and potential for larvae auto-infective strongyloidiasis when immunocompromised
    • rare
    • skin penetration
    • environmental contamination
  13. Trichuris vulpis
    Disease:
    Prevalence:
    Transmission:
    Role of d/c in transmission:
    • usually asymptomatic
    • rare
    • ingesting contaminated soil containing eggs
    • environmental contamination
  14. Alaria spp.
    Prevalence:
    Transmission:
    Role of c/d in transmission:
    • uncommon
    • ingestion of vertebrate parentenic host (undercooked frogs)
    • small due to raccoon being the definitive host and does most of the environmental contamination
  15. Paragonimus killicotti
    Disease:
    Prevalence:
    Transmission:
    Role of c/d in transmission:
    • pulmonary disease atalectstasis, hemoptysis
    • only 2 human cases reported
    • ingestion of raw crayfish
    • more common in wild animals
  16. Nanophytes salmincola
    Disease:
    Prevalence:
    Transmission:
    role of c/d in transmission:
    • Myocarditis, encephalitis "salmon poisoning"
    • rare
    • ingestion of raw fish *actually caused by Neorickettsia helminthoeca*
    • environmental contamination
  17. Dipylidium caninum
    Disease:
    Prevalence:
    Transmission:
    Role in d/c transmission:
    • asymptomatic
    • uncommon
    • ingestion of flea containing cysticercoid larvae
    • environmental contamination, tape develops in small intestine
  18. Mesocestoides spp.
    Disease:
    Prevalence:
    Transmission:
    • visceral tetrathyridiasis
    • rare
    • ingestion of vertebrate parantenic host
  19. Echinococcus multilocularis
    Disease:
    Prevalence:
    Transmission:
    Role of d/c transmission:
    • multilocular hydatidosis (cyst in liver) always fatal
    • rare, was common in Native American tribes in Alaska
    • ingestion of eggs passed in feces of fox, dog, cat
    • environmental contamination
  20. Echinococcus granulosus
    Disease:
    Prevalence:
    Transmission:
    Role of d/c in transmission:
    • Unilocular hydatid disease (typically in the liver very pathogenic)
    • rare
    • ingestion of eggs
    • environmental contamination
  21. Spirometra mansonoides
    Disease:
    Prevalence:
    Transmission:
    role of d/c:
    • Sparganosis
    • rare
    • ingestion of Copepod
    • environmental contamination
  22. Diphyllobothrium latum
    Disease:
    Prevalence:
    Transmission:
    role of d/c:
    • asymptomatic infection
    • uncommon
    • ingestion of fish containing perocercoid larvae (mesocestoid larvae)
    • environmental contamination
  23. Giardia sp.
    Disease:
    Prevalence:
    Transmission:
    role of d/c:
    • Asymptomatic, or intermeittent or chronic diarrhea
    • very common, for every 100,000 people, 0.9% - 42.3% are infected
    • ingestion
    • usually due to other humans
  24. Toxoplasma gondii
    Disease:
    Prevalence:
    Transmission:
    role of d/c:
    • Retinochoroiditis, abortion
    • US - canada around 10 - 20%
    • ingestion of raw or undercooked meat containing bradyzoite or soil
    • cat passes in feces

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