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Microbiology 2nd Block > Ricketssia > Flashcards

Ricketssia Flashcards

1
Q

Ricketsia is a bacteria that is transmitted through

A

Vector

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2
Q

Ricketsia bacteria only stains with

A

Giasma stain
Gumenez stain
Acridine orange

Doesn’t stain with normal stain

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3
Q

The Ricketsia Bacteria is what shape

A

Pleomorphic Bacillius

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4
Q

Is Ricketsia gram positive or negative

A

Negative

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5
Q

Ricketsia bacteria only grows in

A

Embryonated eggs
And cultured medium

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6
Q

In the yolk sac of embryonated egg, the agent of rash grows where ??

A

In the cytoplasm

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7
Q

In the yolk sac of embryonated egg, the agent of thypus grows where ??

A

In the nucleus

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8
Q

Ricketsia bacteria are easily destroyed by ———— except

A

Heat and drying except C. Burnetti which is heat resistant and R.prowazekki in dried up lice pooo

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9
Q

Which bacteria is responsible for Rocky Mountain spotty fever??

A

Ricketsia rickestii

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10
Q

How is RMSF(Rocky Mountain spotted fever) transmitted ??

A

Through infected tick to tick via transovarian
By blood feeding on human via infected tick

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11
Q

The characteristics symptoms of RMSF infection is

A

Rashes starting in the wrist and ankle before moving to the trunk
And can also present with vasculitis

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12
Q

Diagnosis for RMSF infection is

A

Weil Felix test

And clerking for tick exposure

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13
Q

Weil Felix test implies

A

A test done to check Rocky Mountain spotted fever, a Ricketsia ricketsii infection

Where the antibody for Ricketsia crosslink to antigen of proteus organism ……antigen (OX19 &OX2)

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14
Q

Drugs used to treat RMSF infection is

A

Tetracycline and chloramphenicol

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15
Q

Ricketsia akari causes

A

Ricketsia pox

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16
Q

Ricketsia pox is caused by what bacteria

A

Ricketsia akari

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17
Q

The reservoir for Ricketsia akari is

A

Mouse/mice

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18
Q

The vector for Ricketsia akari is

A

Mite

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19
Q

Ricketsia pox is transmitted through

A

Blood feeding via the vector (mite) on human

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20
Q

Ricketsia pox is treated using

A

Tetracycline

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21
Q

Q-fever is caused by what bacteria

A

Coxiella burnetti

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22
Q

Coxiella burnetti bacteria caused what

A

Q fever

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23
Q

Ricketsia tsutsugamushi causes what dieseas

A

Chigger borne scrub typhus

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24
Q

Chigger borne scrub typhus is caused by

A

Ricketsia tsutsugamushi

25
Ricketsia tsutsugamushi is transmitted by
Blood meal through mite bite
26
The reservoir for Ricketsia tsutsugamushi bacteria is
Rodents
27
The characteristics of scrub thypus caused by ————- is ————?
Ricketsia tsutsugamushi is necrotic ESCHAR bite mark( a black scab at the site of insect bite)
28
Other serious complications that can result from Ricketsia ricketsii is
Vasculitis, Thrombocytopenia, DIC , vascular collapse ,heart failure
29
Other serious complications that can result from Ricketsia tsutsugamushi is
Lymphadenopathy, heptomegaly, conjunctivitis etc
30
What Proteus antigen responds in Weil Felix test ??
Antigen OX19 OX2 OXK
31
R.Tsutsugamushi responds to what proteus antigen in Weil Felix test
Antigen OXK
32
R.tsutsugamushi is treated using
Tetracycline and chloramphenicol
33
Ricketsia prowazeki causes what disease
Typhus
34
R.prowazeki is transmitted through
Infected lice
35
Epidemic thypus is caused by what bacteria
Ricketsia prowazeki
36
Endemic thypus is caused by
Ricketsia typhi
37
What Ricketsia bacteria caused vasculitis
Ricketsia ricketsii
38
Which Ricketsia’s vector is lice
Ricketsia prowazeki
39
Ricketsia prowazeki attaches to antigen ———of proteus in Weil Felix test
Antigen OX19. But not OX2
40
Ricketsia ricketsii attaches to what proteus antigen
Antigen OX19 & OX2 AG
41
Ricketsia infection is treated with what drugs
Tetracycline and chloramphenicol
42
Brill zinsser is classified as
A relapse of louse borne infections after many year of primary infection Like if prowazeki infection come back to you again It is called brill zinsser infection
43
Ricketsia typhii is transmitted by what vector
By flea
44
What Ricketsia causes murine thypus
Ricketsia typhi
45
Which of this Ricketsia infection presents with ESCHAR symptomatically?? Ricketsia typhi Ricketsia prowazeki Ricketsia tsutsugamushi Ricketsia akari
Ricketsia tsutsugamushi
46
The only Ricketsia infection that is an airborne infection is ??
Coxiella burnetti
47
Coxiella burnetti affects what organ mostly
The lungs
48
Corxiella burnetti is transmitted through———
Inhalation
49
The reservoir for corxiella burnetti is
Sheep cattle goat
50
Ricketsia bacteria divide by
Binary fission
51
Ricketsia akari has two phase which are
1st phase is Papillovesicualr rash at site of inoculation, fever then malaise (pain) with systemic syndromes 2nd phase is Papiloovesicualr rash all over
52
Flea borne typhus is caused by what bacteria
Ricketsia typhi
53
Ricketsia growth are enhanced in the prescence of
Sulphonamides
54
Doxycycline is an example of tetracycline used to treat
Ricketsia infection
55
R.Prowazeki has reservoir in
Human
56
R.prowazeki usually occur in the times of
War
57
Coxiella burnetti is transmitted by air cus the bacteria divides by
Forming spores
58
Ricketsia infection manifest as
Vasculitis rash and typhus fever except in Q fever

Microbiology 2nd Block (4 decks)

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