Bacteria: Gram-Negative Bacilli Zoonotics

Question 1

Bartonella henselae

Answer 1

1. gram-negative

2. zoonotic bacillus

Question 2

Bartonella henselae causes

Answer 2

cat-scratch disease

Question 3

The Warthin-Starry stain is

Answer 3

a silver stain used to visualize Bartonella henselae

Question 4

Cat scratch disease is transmitted via

Answer 4

cat scratches, bites, or infected fleas

Question 5

Cat-scratch disease commonly presents with

Answer 5

painful axillary lymphadenopathy

Question 6

Cat-scratch disease commonly occurs in

Answer 6

immunocompetent patients

Question 7

Bacillary angiomatosis is transmitted via

Answer 7

cat scratches, bites, or infected fleas

Question 8

Bacillary angiomatosis is characterized by

Answer 8

angiomatous skin lesions, which typically start as reddish papules but can grow into large, highly vascular lesions or nodules

Question 9

Immunocompromised patients are at a higher risk for angiomatosis

Answer 9

bacillary

Question 10

______ are effective against Bartonella henselae

Answer 10

1. doxycycline

2. macrolides

Question 11

Brucella

Answer 11

1. gram negative
2. zoonotic
3. coccobacilli
4. faculative intracellular ogranisms

Question 12

Brucellosis is

Answer 12

a zoonotic disease that can be transmitted via direct contact with animal reservoirs such as cows, pigs, sheep, and goats

Question 13

Brucellosis is associated with

Answer 13

ingestion of unpasteurized dairy products

Question 14

acute brucellosis commonly presents with

Answer 14

nonspecific symptoms such as fever, night sweats, and anorexia

Question 15

brucellosis characteristically presents with an

Answer 15

undulant fever

Question 16

organs of the reticuloendothelial system (including the liver and spleen) are especially vulnerable to

Answer 16

Brucella spp. infection (Brucella spp. bacteria survive and replicate within macrophages)

Question 17

_______ is a possible complication of chronic brucellosis

Answer 17

osteomyelitis

Question 18

Treatment for brucellosis

Answer 18

doxycycline usually in conjunction with rifampin

Question 19

Francisella tularensis

Answer 19

1. gram-negative
2. zoonotic
3. coccobacillus
4. Faculative intracellular within macrophages

Question 20

______ are a common reservoir for Francisella Tularensis

Answer 20

rabits

Question 21

___ ______ are a common vector of Francisella Tularensis

Answer 21

Dermacentor ticks

Question 22

Tularemia can cause

Answer 22

painful skin ulcers and necrosis at the site of infection (often a Dermacentor tick bite)

Question 23

Francisella tularensis bacteria travel

Answer 23

Francisella tularensis bacteria travel through the lymphatic system within macrophages to reticuloendothelial organs (such as lymph nodes) and cause local necrosis and caseating granulomas

Question 24

Tularemia often presents with

Answer 24

painful regional lymphadenopathy

Question 25

_________ are effective against Francisella Tularensis

Answer 25

aminoglycosides

Question 26

Pasteurella multocida

Answer 26

1. gram-negative 2. zoonotic 3. coccobacillus 4. catalase positive 5. oxidase positive 6. encapsulated

Question 27

Pasteurella multocida is transmitted via

Answer 27

bites and scratches of infected animals (dogs and cats are common reservoirs)

Question 28

_____ may occur within 24 hours of Pasteurella multocida infection

Answer 28

cellulitis

Question 29

______ is a possible complication of Pasteurella multocida infection

Answer 29

osteomyelitis

Question 30

Pasteurella multocida is cultured on

Answer 30

5% blood agar

Question 31

Pasteurella multocida bacteria often exhibit

Answer 31

bipolar (“safety pin”) staining on microscopy

Question 32

______ is effective against Pasteurella multocida

Answer 32

penicillin