Special topic: Bacteria II

Question 1

Brucella affects what system?

Answer 1

reticuloendothelial

Question 2

IMVic results for Brucella

Answer 2

-, -, -, -, -

Question 3

All Brucelle species reduce nitrate to nitrites EXCEPT

Answer 3

B. ovis

Question 4

Which Brucella species gives more serious disease course in humans?

Answer 4

B. melitensis - sheep and goat

Question 5

B. abortus affects what animal

Answer 5

cattle

Question 6

B. suis affects what animal

Answer 6

swine

Question 7

If an animal is infected by Brucella, it is dangerous to handle the _____ even if one is wearing gloves

Answer 7

placenta

Question 8

The placentas and fetal membranes of cattle, swine, sheep, and goats contain ____

Answer 8

erythritol

Question 9

Types of Brucella human infection

Answer 9

• Acute
• latent
• chronic

Question 10

In malta fever, ______ fever occurs over weeks, months, or years

Answer 10

periodic nocturnal

Question 11

Acute human infection is due to what Brucella species?

Answer 11

B. melitensis

Question 12

High endemic areas for Brucella

Answer 12

○ Mediterranean basin
○ Middle East
○ Western Asia
○ Africa
○ Latin America

Question 13

Brucellin skin test is not useful in what type of brucellosis

Answer 13

Acute

Question 14

Borrelia are commensals on the ______ mucosa

Answer 14

buccal and genital

Question 15

This Borrelia species causes lyme disease

Answer 15

B. burgdorferi

Question 16

Medium for Borrelia

Answer 16

Noguchi’s medium

Question 17

TRUE OR FALSE: Ultimate recovery for borrelia is attributed to immunity to AT LEAST ONE antigenic variants

Answer 17

False, ALL antigenic variants

Question 18

Lyme disease is transmitted by which vector

Answer 18

Ixodid

Question 19

This Ixodid species is the vector of Lyme disease in Europe

A. I. dammini
B. I. ricinus
C. I. pacificus

Answer 19

B. I. ricinus

Question 20

Stage 1 of Borrelia includes the formation of _____

Answer 20

Erythema migrans

Question 21

Due to Giemsa stain, Rickettsia appears ____

Answer 21

Bluish

Question 22

TRUE OR FALSE: Rickettsia are strict intracellular parasites

Answer 22

TRUE

Question 23

For cultivation of Rickettsia, what are used

Answer 23

Yolk sac
Cell culture
Lab animals

Question 24

Two classical divisions of Rickettsial disease

Answer 24

Typhus Fever Group
Spotted fever group

Question 25

3 subgroups of Typhus fever group

Answer 25

1. Epidemic Typhus
2. Brill-Zinsser Disease
3. Endemic Typhus (Murine Typhus)

Question 26

Epidemic typhus is caused by ____

Answer 26

R. prowazekii

Question 27

Principal reservoir of Epidemic Typhus

Answer 27

Pediculus humanus corporis

Question 28

Primary reservoir of Epidemic Typhus

Answer 28

Humans

Question 29

Brill-Zinsser Disease is also called

Answer 29

Recrudescent Typhus

Question 30

Endemic typhus is caused by

Answer 30

R. typhi (R. mooseri)

Question 31

Primary reservoir of Endemic Typhus

Answer 31

Rodents

Question 32

Principal reservoir of Endemic Typhus

Answer 32

Xenopsylla cheopis

Question 33

Spotted fever groups are transmitted by ticks EXCEPT for ____

Answer 33

R. akari

Question 34

R. rickettsii causes what disease

Answer 34

Rocky mountain spotted fever

Question 35

Vector of R. rickettsi

Answer 35

Dermacentor andersoni and other Ixodid (hard) ticks

Question 36

Rickettsial pox is grouped under what classification?

Answer 36

Transitional group

Question 37

Scrub typhus group is also called ___

Answer 37

Chigger-borne typhus, Tsutsugamushi disease

Question 38

Scrub typhus group etiologic agent

Answer 38

Orientia tsutsugamushi

Question 39

What is the zoonotic tetrad of scrub typhus group?