BM2 MICRO QUIZ 2 Flashcards by My Wallet Is Dead

Shepherd’s crook are morphologic features of *
M. leprae
M. marinum
M. avium complex
M. kansasii

M. kansasii

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Which of the following is not true about positive tuberculin test result ? *

Persons are at risk of developing disease from reactivation of the primary infection,
An individual has been infected in the past
Negative persons have never been infected
It does not imply that active disease or immunity to disease is present

Negative persons have never been infected

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All of the following are true about FTA-ABS, EXCEPT: *

A negative FTA-ABS result on CSF tends to exclude neurosyphilis
Positive FTA- ABS result on CSF can occur by transfer of antibodies from serum and is not helpful in the diagnosis of neurosyphilis
The presence of IgG FTA in the blood of newborns is a good evidence of in utero infection
The test uses indirect immunofluorescence to detect reactive antibodies

The presence of IgG FTA in the blood of newborns is a good evidence of in utero infection

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One is NOT a first-line drugs in treating tuberculosis *

Isoniazid
Amikacin
Rifampicin
Pyrazinamide

Amikacin

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All of the following can kill Treponema pallidum, EXCEPT: *

Penicillin
Heat (32C)
Bismuth
Drying

Heat 32C

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It has been cultured from hot and cold water taps, hospital hot water generators and storage tanks, and other environmental sources *

M. genavense
M. xenopi
M. kansasii
M. marinum

M. xenopi

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Growth on solid media in < 7days *

Scotochromogen
Non chromogen
Rapid grower
Photochromogen

rapid grower

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Mycoplasma pneumoniae is transmitted from person to person by means of *

Respiratory secretions
Aerosol
all are possible
fecal-oral route

respiratory secretions

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One of these does NOT demonstrates YELLOW-ORANGE fluorescence after staining *

Acid-Fast
All of the above
Auramine
Rhodamine

acid fast

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Agglutinating leptospiral antibodies first appear 5–7 days after infection and develop slowly, reaching a peak at *

9-10 weeks
1-2 weeks
3-4 weeks
5-8 weeks

5-8 weeks

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Leptospirae can survive for weeks in water given which condition? *

Alkaline water
Rat infested water
Acidic water
Dirty water

alkaline water

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Mycobacterium avium complex are treated with *

D. B and C
A. INH, RIF, PZA
B. Clarithromycin or Arithromycin
C. Rifabutin, Clofazisime, Fluoroquinoles

B and C

B. Clarithromycin or Arithromycin
C. Rifabutin, Clofazisime, Fluoroquinoles

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This type of TB specie is very common in AIDS patients and occurs in other
immunosuppressed patients *

M. tuberculosis
M. bovis
M. avium complex
M. leprae

M. avium complex

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The risk of developing disseminated MAC infection in HIV-infected persons is greatly increased *

CD4-positive lymphocyte count declines to below 100/μL
CD4-positive lymphocyte count declines to above 100/μL
If the patient is a homosexual
All of the above

CD4-positive lymphocyte count declines to BELOW 100/μL

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IIn women, M genitalium has been associated with a variety of conditions which include: *

Oophoritis
Cervical polyp
Infertility
Endometriosis

INFERTILITY

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This is known as yellow bacillus *

M. kansasii
M. marinum
M. genavense
M. xenopi

M. kansasii

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Lady Windermere syndrome is described to a patient having the following criteria*

pulmonary MAC
absence of chronic lung disease
all of the above
middle aged to elderly women

all of the above

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This is referred as tap water bacillus *

M. leprae
M. avium
M. szulgai
M. gordonae

M. gordonae

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This is known as swimming pool granuloma or fish tank granuloma *

M. kansasii
M. xenopi
M. marinum
M. fortuitum

M. marinum

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Which of the following are eponyms for disease caused by M. ulcerans? *

Bairnsdale ulcer
Buruli ulcer
Buruli disease
All of the above

all of the above

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This method is based on development of profiles of mycolic acids *

High performance liquid chromatography (HPLC)
All of the above
Matrix assisted laser desorption ionization- time of flight mass spectrometry (MALDI-TOF MS)
Molecular probe methods

High performance liquid chromatography (HPLC)

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One is not true about Interferon Gamma Release Assays (IGRA) *

These assays are based on the host’s immune responses to specific M. tuberculosis antigens
ESAT-6 (early secretory antigenic target-6) and CFP-10 (culture filtrate protein-10)
Utilizes an enzyme linked immunoassay in whole blood or purified peripheral blood
mononuclear cells
Can be used in children less than 2 years old
None of the above

Can be used in children less than 2 years old

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Hansen’s disease *

M. tuberculosis
M. chelonae
M. fortuitum
M. leprae

M. leprae

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One of the rapid growers mycobacteria which is multidrug resistant includes *

M. chelonae
M. abscessus
All of the above
M. fortuitum complex

M. abcessus

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Rickettsia akari has its vector in bloodsucking mites of the species * Glaucomys volans Allodermanyssus sanguineus Dermacentor andersoni Pediculus corporis

Allodermanyssus sanguineus

the most important indication for intravenous clindamycin is the treatment of patients with: * Pneumonia meningitis severe anaerobic infections colitis

severe anaerobic infections

Rickettsial growth is enhanced in the presence of what antibiotics? * All of the above Chloramphenicol Tetracyclines Sulfonamides

sulfonamides

Southern flying squirrel is an extrahuman reservoir of what Rickettsia specie?* Orientia tsutsugamushi Rickettsia typhi Rickettsia rickettsii Rickettsia Prowazekii

Rickettsia prowazekii

Eschar is prominent in the following infection caused by * Rickettsia sibirica Rickettsia conorii Rickettsia akari All of the above

all of the above

Sheeps, cattle and goats are the mammalian reservoir of which of the following? * Rickettsia akari Anaplasma phagocyticum Erlichia chaffeensis Coxiella burnetii

coxiella burnetii

The drug of choice in the treatment of acute Q fever? * Doxycycline Chloramphenicol Sulfonamides Metronidazole

doxycycline

Humans are the mammalian reservoir of * Rickettsia rickettsii Rickettsia typhi Orientia tsustsugamushi Rickettssia prowazekii

Rickettsia prowazekii

Rocky Mountain Spotted Fever do not have this clinical feature * Rash Fever Eschar Myalgia

eschar

Pasteurization at 71.5 degree celsius for 15 seconds are adequate to destroy viable related genera of Rickettsia * Rickettsia akari Coxiella burnettii Ehrlichia chaffeensis Anaplasma phagocytophilum

COxiella burnettii

Drug of choice for Rickettsiae: * Doxycyxline Amikacin Ceftriaxone Penicillin G

doxycycline

Drugs that are primarily used to treat Mycobacterial Infections * Isoniazid All are correct Rifampicin Ethambutol

all are correct

This stains only with Gimenez * Ehrlichia chaffeensis All of the above Coxiella burnetti Ehrlichia ewingii

coxiella burnetti

This causes a flea-borne typhus * Orientia tsutsugamushif Rickettsia typhi Rickettsia prowazekii Rickettsia rickettsii

rickettsia typhi

Which of the following drugs is a fourth-generation cephalosporins: * Cefoxitin Ceftazidime Cefepime Cefazolin

cefepime

Drug of choice for Leptospira: * TMP-SMZ Ceftriaxone Amikacin Penicillin G

Penicillin G

These are important in the humoral immune response and provide the basis for serotyping in Rickettsia. * Diaminopimelic acid Muramic acid Omp A and B Lipopolysaccharides

Omp A and B

Isolation of Rickettsiae should be done only in what type of laboratory? * Reference Secondary Tertiary Primary

reference

Which of the following are reservoir of Erlichia ewingii? * Mice Marsupials Dogs Rodents

dogs

This Rickettsia specie causes mild disease with a rash resembling that of varicella * Rickettsia prowazekii Orientia tsutsugamushi Rickettsia akari Rickettsia typhi

Rickettsia akari

Orientia tsutsugamushi belongs to what Rickettsial infection group? * Epidemic typhus Endemic typhus Scrub typhus Traditional group

scrub typhus

Dermacentor andersoni is the vector of what Rickettsia specie? * Rickettsia typhi Rickettsia rickettsii Rickettsia prowazekii Rickettsia akari

rickettsia rickettsii

Brill -Zinsser disease is associated with what Rickettsia infection disease? * Epidemic typhus Spotted fever group Endemic murine typhus Scrub typhus

epidemic typhus

Anticoagulant of choice for blood sample in the detection of erlichiae using Polymerase Chain Reaction * Ethylenediamenetetracetic acid Heparin Sodium oxalate Sodium fluoride

Ethylenediamenetetracetic acid ethyl-ene-diamene-tetracetic

Presence of inclusions in the circulating white blood cells are diagnostic tests of * All of the above Erlichia ewingii Anaplasma phagocytophilum Erlichia chaffeensis

all of the above

Rat fleas carry the rickettsiae from rat to rat and from rat to humans * Rickettsia akari Rickettsia prowazekii Orientia tsustsugamushi Rickettsia typhi

rickettssia typhi

Pediculus humanus corporis and Pediculus humanus capitis are vectors of * Rickettsia prowazekii Rickettsia rickettsii Rickettsia akari Rickettsia typhi

rickettsia prowazekii

True reservoir of Orientia tsutsugamushi * Marsupials Mites Dogs Mice

mice

Treatment of Leprosy: * Dapsone + Rifampin Ethambutol + Rifampin Rifampin + Ethambutol Dapsone + Ethambutol

Dapsone + Rifampin

This causes human monocyte ehrlichiosis (HME) * Erlichia ewingii Erlichia chaffeensis All of the above Anaplasma phagocytophilum

Erlichia chaffeensis

Which of the following stains are the most useful methods for confirming Rickettsial infections? * Gimenez and Acridine Giemsa and Gram Immunofluorescence and Immunostains All of the above

Immunofluorescence and Immunostains

Human urine may contain Leptospira during this time: * 1-2 days 3-4 days 1-2 weeks 2-3 weeks

2-3 weeks

What is your report if the smear of sputum shows 1-9 AFB per field using Carbol fuschsin stain? *All of the following can kill Treponema pallidum 3+ 4+ 1+ 2+

Which among these tests is used to diagnose neurosyphilis? * FTA-ABS VDRL RPR toluidine red unheated serum test

VDRL

Leprospire grow best under what condition? * Aerobic Microaerophilic Anaerobic Presence of CO2

Aerobic

Organism(s) associated with Lyme Disease * ALL are CORRECT Borrelia afzelii Borrelia burgdorferi sensu stricto Borrelia garinii

ALL are CORRECT

On culture, which of the following organisms will have a "fried egg" appearance? * Mycoplasma hominis Mycoplasma pneumoniae Mycoplasma genitalium Ureaplasma urealyticum

Mycoplasma hominis

Lesions demonstrate noncaseating granulomas in the nerves and dermis, extending to involve the basal layer of the epidermis; few, if any, AFB are present * All of the above Lepromatous leprosy Borderline leprosy Tuberculoid leprosy

Lepromatous leprosy

This is the effective antibiotic for the refractory cases of Lyme disease: * Penicillin G Amoxicillin Ceftriaxone Doxycycline

Ceftriaxone

This has the widespread anergic form of the disease * C. Borderline leprosy B. Tuberculoid leprosy D. B and C A. Lepromatous leprosy

A. Lepromatous leprosy

A 20 year old male came in to your clinic with a chief complaint of dysuria, denied having recent sexual intercourse. Which of the following organisms are considered to be a possible etiologic agent? * Escherichia coli Staphylococcus aureus Ureaplasma urealyticum Mycoplasma hominis

Ureaplasma urealyticum

The most common pathologic findings in complicated cases of Mycoplasma pneumoniae infection is: * necrotizing enterocolitis sepsis All are correct interstitial with peribronchial pneumonitis

interstitial with peribronchial pneumonitis

When does a pregnant woman with syphilis can transmit Tryponema pallidum to the fetus through the placenta? * 20-24 weeks AOG 4-8 weeks AOG 10-15 weeks AOG 35-39 weeks AOG

10-15 weeks AOG

Incubation period of Leptospirosis: * 3-4 weeks 1-2 weeks 1-2 days 3-4 days

1-2 weeks

LöwensteinJensen is a what type of media * None of the above Broth Inspissated egg Semisynthetic

Inspissated egg

The spirochete B burgdorferi is transmitted to humans by the bite of: * Ixodes tick Anopheles mosquito Reduviid bug O tsutsugamushi

Ixodes tick

n leptospirosis, the principal sources of human infection include the following, EXCEPT: * Wild Rodents Cattle Goat Pig

Goat

characteristic skin lesion of Lyme disease: * Necrotizing fasciitis Impetigo Erythema migrans Silver scaling

Erythema migrans

TRUE of Mycoplasma hominis: * Women with salpingitis more commonly have antibodies against M hominis than women with no disease. M hominis can be cultured from the upper urinary tract in about 10% of patients with pyelonephritis. M hominis is strongly associated with infection of the uterine tubes (salpingitis) and tubo-ovarian abscesses; the organism can be isolated from the uterine tubes of about 10% of patients with salpingitis but not from women with no signs of disease. ALL are Correct

ALL are Correct

The events in Mycoplasma infection are less well understood but may include several factors and it include all of the following EXCEPT: * competition for and depletion of nutrients. cell-mediated immunity cytolysis mediated by antigen–antibody reactions or by chemotaxis and action of mononuclear cells direct cytotoxicity

cell-mediated immunity

These following therapeutic drug(s) can be given to patient who has Mycoplasma infection, except? * Erythromycin Tetracycline Azithromycin Penicillin

Penicillin

These develop pigment when growing in the dark * Nonchromogens All of the above Photochromogens Scotochromogens

Scotochromogens

Which of the following statement is FALSE? * If the RPR result is negative, then additional testing with a traditional treponemal test such as the TP-PA is recommended. If the RPR result is positive, a current or past infection with syphilis is likely. If the TP-PA result is positive, syphilis is likely ALL are correct

ALL are correct

Which of the following organs are mainly affected by Leptospirosis? * Spleen Adrenal glands Pancreas Kidney

Kidney

Which among these tests is used to diagnose neurosyphilis? * VDRL unheated serum reagin RPR toluidine red unheated serum test

VDRL

N-acetyl-L-cysteine decontaminated with NaOH kills many other bacteria and fungi in the specimens like * Gastric washings Sputum Blood CSF

Sputum