[MCQ] Syphilis- Part 1

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See all quizzes of Syphilis- Part 1 here:

1 Primary lesion of syphilis appear how many weeks after infection ?
A. 2 – 6 weeks
B. 6 – 12 weeks
C. 12 – 24 weeks
D. 24 – 60 weeks

2 Median incubation period in humans of primary lesion of syphilis
is ?
A. ~ 7 days
B. ~ 14 days
C. ~ 21 days
D. ~ 28 days

3 Spirochaetale that is pathogenic for humans is ?
A. Leptospira
B. Borrelia
C. Treponema
D. All of the above

4 Which Treponema subspecies causes ‘Yaws’ ?
A. T. pallidum
B. T. pertenue
C. T. endemicum
D. T. carateum
5 Which Treponema subspecies causes ‘Pinta’ ?
A. T. pallidum
B. T. pertenue
C. T. endemicum
D. T. carateum

6 Endemic syphilis is also called ?
A. Bejel
B. Siti
C. Dichuchwa
D. All of the above

7 PCR amplification of which gene can differentiate etiologic agents
of venereal syphilis, yaws and bejel ?
A. stf
B. tpr
C. mof
D. xqr

8 Virulent strains of T. pallidum are grown in ?
A. Mice
B. Horse
C. Rabbits
D. Cow

9 The most common cause of genital ulceration in most developing
countries is ?
A. Chancroid
B. Syphilis
C. Genital herpes
D. Lymphogranuloma venereum (LGV)

10 Which of the following about T. pallidum is false ?
A. T. pallidum can penetrate intact mucous membranes
B. Blood from patient of incubating syphilis is infectious
C. Incubation period rarely exceeds 6 weeks
D. None of the above
11 50% infectious dose for intradermal inoculation in humans is ?
A. 57 organisms
B. 157 organisms
C. 257 organisms
D. 357 organisms

12 What is the treponeme concentration in tissues before a clinical
lesion appears ?
A. 105 / gram
B. 106 / gram
C. 107 / gram
D. 108 / gram

13 What is the average inoculum of infectious organisms for naturally
acquired syphilis ?
A. 500 – 1000
B. 5000 – 10000
C. 50000 – 100000
D. 500000 – 1000000

14 Primary lesion at the site of inoculation usually persists for ?
==
A. 2 – 4 weeks
B. 4 – 6 weeks
C. 6 – 12 weeks
D. 12 – 18 weeks

15 Mucocutaneous manifestations of secondary syphilis appear how
many weeks after the chancre heals ?
A. ~ 3 – 6 weeks
B. ~ 6 – 8 weeks
C. ~ 10 – 16 weeks
D. ~ 16 – 28 weeks

16 Secondary lesions subside within what time ?
A. 2 – 6 weeks
B. 6 – 12 weeks
C. 12 – 16 weeks
D. 18 – 24 weeks

17 Which of the following is not a presentation of tertiary syphilis ?
A. Condylomata lata
B. Gumma
C. Cardiovascular syphilis
D. Symptomatic neurosyphilis

18 Which of the following about primary chancre is false ?
A. Begins as a single painless papule
B. Cartilaginous consistency on palpation
C. Multiple primary lesions more common among men with
concurrent HIV infection
D. None of the above
19 Which of the following genital lesion is painless ?
A. Herpes simplex virus infection
B. Donovanosis
C. Chancroid
D. Recurrent genital herpes

20 Which of the following is false about inguinal lymph-adenopathy
that accompanies primary syphilitic lesion ?
A. Appears within 1 week of lesion onset
B. Unilateral
C. Nonsuppurative
D. Painless

21 Lues maligna refers to ?
A. Eye lesion
B. Weight loss
C. Skin lesion
D. Alopecia

22 Which of the following is false about skin rash of secondary
syphilis ?
A. Nonpruritic macules initially
B. Papular lesions involve palms & soles
C. More than one form is present simultaneously
D. None of the above

23 Which of the following is a highly infectious lesion in syphilis ?
A. Chancre
B. Lues maligna
C. Condylomata lata
D. Mucous patch