Hepatitis III Flashcards Preview

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Flashcards in Hepatitis III Deck (30):
1

list the 5 larval stages observed between excretions of eggs of trematodes and formation of final larval stage

-miracidium
-sporocyst
-redia
-cercaria
-metacercaria

2

only way humans can be infected with trematodes

ingestion of metacercaria

3

how does one get infected with fasciola hepatica

ingestion of watercress infected by metacercaria

4

two species of leishmania that cause visceral leishmaniasis

l. donovani and l. infantum (chagasi)

the rest cause cutaneous leishmaniasis

5

what happens with persistent infection of visceral leishmaniasis (l. donovani and l. infantum)?

pigmented granulomatous areas of the skin develop called post kala-azar dermal leishmaniaiss

6

early and late symptoms of visceral leishmaniasis

early - irregular fever (atypical, double peak)
late - splenomegaly and hepatomegaly -> death

7

infective form of plasmodium

sporozoites

8

kidney damage is associated with plasmodium falciparum which results in what ?

black water fever

9

what is black water fever caused by

hemolysis of RBCs, marked hemoglobinuria, renal failure, tubular necrosis and death

10

infective form of entamoeba histolytica

cyst but turns into trophozoite which is the replicative form

11

clinical syndrome of entamoeba histolytica

bloody diarrhea with flask shaped ulcers - amoebic dysentery (intestinal)

invasive amoebic liver abscesses (ALA)

12

infectious agents involved in granulomatous hepatitis

coxiella burnetti, brucella, mycobacteria, histoplasma capsulatum

13

most common viral infection of the eye

adenovirus

14

structure of adenovirus

naked dsDNA that is icosahedral

15

where can adenovirus be isolated from in healthy individuals

nasopharynx, tonsil, intestinal tract

16

respiratory clinical symptoms of adenovirus

acute and chronic conjuctivitis, pharyngoconjuctivitis, hematuria

17

immunity against adenovirus

group specific CF antibodies

18

what do the different types of chlamydia trachomatis cause

A-C cause trachoma and blindness
D-K cause conjuctivitis

19

most common bacterial eye infection during birthing process

neisseria gonorrhea (ophthalmia neonaturum)

20

most common cause of cataracts in places with limited supply of water and the major route

neisseria catarrhalis
major route is contaminated hands

21

purulent infection of conjunctiva associated with

staph aureus and sometimes strep pneumonia and hemophilus influenza

22

people with poor contact lens practices can be infected with what

acanthamoeba

23

infective stage of acanthamoeba

cysts and trophozoite

24

clinical syndrome of acanthamoeba

acute and subacute granulomatous amoebic encephalitis
keratitis and corneal ulcers

25

most common viral agent of infection of testes and parotids

mumps

26

class of virus is mumps and describe its structure

paramyxovirus
-ssRNA that is enveloped and helical

27

major peplomeres on mumps

HA, NA, F

28

transmission of mumps

droplets and saliva

29

most common feature of mumps

parotitis with orchitis being the most common in adult males

30

prevention of mumps

vaccination with MMR