Deck 18: Vector-Borne Diseases

Question 1

Match the organism with the appropriate characteristic.
West Nile virus

A)Infects red blood cells
B)Member of the Japanese encephalitis group

Answer 1

Member of the Japanese encephalitis group

Question 2

Match the preferred host with the correct animal(s) or birds.
Preferred host for larval and nymphal stages of I. scapularis.

A)White-footed mouse
B)White-tailed deer

Answer 2

White-footed mouse

Question 3

Match the causative agent with the appropriate characteristic.
B. afzelii

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA) in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Answer 3

Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA) in Europe

Question 4

Match the types of bonding with the correct definition.
Erythema chronicum migrans (ECM) is the _______________ caused by a tick bite.

A)itchy rash
B)red bull's-eye rash
C)spirochete-infected skin lesion
D)Both B and C.

Question 5

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.
scapularis (formerly classified as I. dammini)

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 6

Match the types of bonding with the correct definition.
What is the causative agent of Lyme disease?

A)Herpesvirus
B)Borrelia burgdorferi
C)Treponema pallidum
D)Deer tick

Question 7

Match the types of bonding with the correct definition.
Serologic assays for Lyme disease are

A)highly specific in the early stages.
B)highly sensitive in the early stages.
C)insensitive during the first several weeks of infection.
D)insensitive during the first months of infection.

Question 8

Match the types of bonding with the correct definition.
Most U.S. cases of Lyme disease remain concentrated in ____________ regions.

A)northeastern
B)north-central
C)Pacific coastal
D)All of the above.

Question 9

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.
persulcatus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 10

Match the types of bonding with the correct definition.
One of the most widely available assays for antibody in Lyme disease is

A)EIA for total IgM or IgG antibodies.
B)Southern blot test.
C)indirect fluorescent antibody (IFA).
D)RIA.

Question 11

Match the types of bonding with the correct definition.
The diagnosis of Lyme disease in the United States is based on

A)characteristic clinical findings.
B)history of exposure in endemic area.
C)erythema migrans (EM) or an antibody response to Borrelia burgdorferi observable by the ELISA or Western blot test.
D)All of the above.

Question 12

Match the types of bonding with the correct definition.
Patients with Lyme arthritis should demonstrate positive findings for

A)serum antinuclear antibodies.
B)rheumatoid factor.
C)the VDRL test.
D)antibodies to Borrelia burgdorferi.

Question 13

Match the preferred host with the correct animal(s) or birds.
Preferred host for I. scapularis adult stage.

A)White-footed mouse
B)White-tailed deer

Question 14

Match the causative agent with the appropriate characteristic.
B. garinii

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA) in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Question 15

Match the types of bonding with the correct definition.
The clinical case definition of Lyme disease includes but is not limited to

A)the presence of erythema migrans.
B)at least one objective, late-manifesting sign of musculoskeletal, neurologic, or cardiovascular disease for antibody to Borrelia burgdorferi.
C)positive serologic evidence.
D)All of the above.

Question 16

Match the types of bonding with the correct definition.
Lyme disease usually occurs during the summer, with most patients suffering from

A)flulike symptoms.
B)erythema migrans (EM).
C)arthritis.
D)Both A and B.

Question 17

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.
pacificus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 18

Match the types of bonding with the correct definition.
The CLIA-waived procedure for presumptive testing for Lyme disease is the

A)ELISA
B)Western blot test.
C)indirect fluorescent antibody (IFA).
D)PreVue assay for Borrelia burgdorferi.

Question 19

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.
ricinus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 20

Match the causative agent with the appropriate characteristic.
Borrelia burgdorferi strains

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA) in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Question 21

Match the Ehrlichia species developmental stages with the appropriate description.
Final stage

A)Packed elementary bodies (initial bodies) visible
B)Enter a leukocyte by phagocytosis and multiply rapidly
C)Morular, or mulberry, forms

Question 22

Match the Ehrlichia species developmental stages with the appropriate description.
First stage

A)Packed elementary bodies (initial bodies) visible
B)Enter a leukocyte by phagocytosis and multiply rapidly
C)Morular, or mulberry, forms

Question 23

Match the organism with the appropriate characteristic.
Babesiosis

A)Infects red blood cells
B)Member of the Japanese encephalitis group