Parasitology lecture: Parasites of Public Health Importance

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Kristenwilliams
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Parasitology lecture: Parasites of Public Health Importance
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2015-07-02 20:58:12
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Public health
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Public health
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  1. Toxocara canis/cati
    4-20% of people infected with viscera larval migrans and ocular larval migrans
  2. Ancylostoma braziliense/caninum
    • Cutaneous larval migrans "Creeping Eruption"
    • Causes pneumonia, verminous eosinophilic colitis
    • Transmission: Skin penetration
    • Dog contaminates environment
  3. Strongyloides stercoralis
    • Pneumonia in man
    • Disease: Diarrhea, potential for larvae auto-infective strongyloidiasis with suppressed immune system 
    • Transmission: Larvae in soil penetrate skin
  4. Lyme disease
    • Etiology: Borrelia burgdorferi 
    • Transmitted by: Ixodes scapularis
    • Symptoms: Joint ill, lethargy, and pyrexia
  5. Baylisascaris procyonis
    • Disease: Serious visceral disease, myocarditis, encephalitis, death and ocular disease
    • Transmission: Ingesting contaminated soil
    • Definitive host: Raccoons
  6. Dirofilaria immitis
    • Disease: Pulmonary coin lesions
    • Prevelance: Rare, seen in cadavers
    • Transmission: Mosquito
    • Dog serves as a reservoir
  7. Trichuris vulpis
    • Trichuris trichiura in humans
    • Transmission: Ingestion of contaminated soil
  8. Alaria sp.
    • Transmission: Undercooked frogs, rubbing eyes while cleaning frog legs 
    • Transmitted by raccoons contaminating environment
  9. Paragonimus kellicotti
    • Disease: Pulmonary atalectstasis, hemoptysis
    • Transmission: Ingest crayfish
    • Wild host contaminate the soil
  10. Nanophytes salmincola
    • Disease: Ingestion of raw fish, can cause myocarditis or encephalitis 
    • Wildlife contaminate environment
  11. Dipylidium caninum
    • Transmission: Ingestion of flea containing cysticercoid
    • Dog/cat pass egg packets in feces or flea ingested by human
  12. Mesocestoides sp.
    • Disease: Visceral tetrathyridiasis
    • Transmission: Ingestion of paraentenic host
  13. Echinococcus multicularis
    • Disease: Multiocular hydatidosis (lung and liver)
    • Transmission: Ingestion of eggs
    • Dog/cat shed eggs
  14. Echinococcus granulosus
    • Disease: Unliocular hydatid cyst (liver)
    • Transmission: Ingestion of eggs
    • Dogs shed eggs in environment
  15. Spirometra mansonoides
    • Disease: Sparganosis
    • Transmission: Ingestion of infected copepod
    • Cats shed eggs
  16. Diphyllobothrium latum
    • Disease: Broad fish tapeworm
    • Transmission: Ingestion of fish
  17. Giardia sp.
    • Disease: Chronic diarrhea 
    • Prevelance: Every 100,000 people .9-42.3% are positive
    • Transmission: Ingestion of cysts, waterborne
  18. Toxoplasma gondii
    • Disease: retinochoroiditis, flu-like
    • Prevelance: 10-20% 
    • Transmission: Ingestion of uncooked meat, ingesting oocysts from contaminated objects
    • Cats pass oocysts in feces
  19. Cryptosporidium parvum
    • Disease: Diarrhea, in AIDS patients can be life threatening 
    • 40% of man infected by time of adult
    • Transmission: Water, water parks, ingestion of oocysts in feces
  20. Balantidium coli
    • Disease: Typhlitis, dysentery
    • Transmission: Ingestion of cysts in feces
  21. Trypanosoma cruzi
    • Disease: Chagas disease, myocarditis
    • Transmission: Feces of bugs, bug takes blood meal, feces then rubbed into bite wound
    • Dog/cat can be reservoir for infected bugs
  22. Leishmania donovani
    • Disease: Visceral leishmaniasis with hepatomegaly, splenomegaly, anemia
    • Cutaenous leishmaniasis is common
    • Transmission: Sand flies
    • Dog can be reservoir
  23. Ctenocephalides felis
    • Disease: Dermal allergy
    • Transmission: Direct
    • Dog/cat major source of blood and way by which humans are bitten and injected 
    • In humans transmits: Dipylidium caninum, Bubonic plague, Brucellosis, etc.
  24. Rat flea
    Xenopsylla cheopis
  25. Sarcoptes scabei
    • Disease: Sarcoptic mange
    • Transmission: Direct, mite from dogs
  26. Demodex sp.
    • Disease: Allergic reaction
    • Transmission: Direct
    • Dog/cat cause pruritis

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