Vector-Borne Diseases Flashcards
Common vectors of Lyme disease include all the
following except:
a. I. pacificus
b. I. scapularis
c. I. ricinus
d. D. variabilis
d. D. variabilis
The only continent without Lyme disease is:
a. Asia
b. Europe
c. Africa
d. Antarctica
d. Antarctica
The primary reservoir in nature for B. burgdorferi is the:
a. White-tailed deer
b. White-footed mouse
c. Lizard
d. Meadowlark
b. White-footed mouse
The first B. burgdorferi antigen to elicit an antibody
response is:
a. Outer surface protein A
b. Outer surface protein B
c. Flagellar 41-kDa polypeptide
d. 60-kDa polypeptide
c. Flagellar 41-kDa polypeptide
On average, the incidence of infection following an
I. scapularis tick bite in an endemic area is:
a. 1%
b. 3%
c. 5%
d. 10%
b. 3%
Erythema migrans:
a. Occurs in all patients
b. Harbors B. burgdorferi in the advancing edge
c. Is easily distinguished from other erythemas
d. Is more common in the winter months
b. Harbors B. burgdorferi in the advancing edge
The predominant symptoms of Lyme meningitis are:
a. Severe headache and mild neck stiffness
b. Aseptic meningitis and double vision
c. Cranial nerve palsies and blurred vision
d. Peripheral radiculoneuritis and peripheral
neuropathy
a. Severe headache and mild neck stiffness
Cardiac involvement in Lyme disease may include:
a. Murmurs
b. Conduction abnormalities
c. Congestive heart failure
d. Vasculitis
b. Conduction abnormalities
Ocular involvement in Lyme disease includes all the
following except:
a. Cranial nerve palsies
b. Conjunctivitis
c. Panophthalmitis with loss of vision
d. Choroiditis with retinal detachment
b. Conjunctivitis
Pregnancy in Lyme disease:
a. Does not result in high fetal mortality
b. Has been associated with transplacental
infection
c. Should be terminated because of maternal risk
d. Is not associated with congenital abnormalities
b. Has been associated with transplacental
infection
The most useful test for distinguishing between true-
positive and false-positive serologic test results is:
a. Enzyme-linked immunosorbent assay
b. Immunofluorescence assay
c. Polymerase chain reaction
d. T cell assay
c. Polymerase chain reaction
Preventive methodsfor Lyme disease include all the following except:
a. Wearing light-colored clothes
b. Tucking pants into socks
c. Applying insect repellent to skin and clothes
d. All of the above
d. All of the above
Lyme disease, the most common tickborne disease in the
United States, is a major health hazard for:
a. Dogs
b. Horses and cattle
c. Humans
d. All of the above
d. All of the above
Lyme disease is a ________ type of infection.
a. Bacterial
b. Parasitic
c. Viral
d. Fungal
a. Bacterial
The first Native American case of what would later be
called Lyme disease occurred in:
a. Connecticut
b. Wisconsin
c. Florida
d. New York
b. Wisconsin
Unlike some procedures, the polymerase chain reaction
(PCR) assay can be used to detect Lyme disease–causing
organisms in:
a. Urine
b. Cerebrospinal fluid
c. Synovial fluid
d. Blood
c. Synovial fluid
Antigen detection systems in Lyme disease testing screen
for _______ (21) rather than for _______ (22) associated
with the infection. (2 answers)
a. Antibody
b. Microorganisms
c. Antigenic products
d. An infected tick
- c
- a
- A patient who has a specific Lyme disease–associated
manifestation may be treated with:
a. Vaccination
b. Interferon
c. Antibiotic
d. Analgesic
c. Antibiotic
Ehrlichia spp. belong to the same family as the organism
that causes:
a. Lyme disease
b. Rocky Mountain spotted fever
c. Toxoplasmosis
d. Infectious mononucleosis
b. Rocky Mountain spotted fever
One of the most common physical findings in adults with
ehrlichiosis is:
a. Hives
b. Fever
c. Erythema migrans
d. Nausea
b. Fever
In human granulocytic ehrlichiosis (anaplasmosis), the
diagnosis is confirmed by seroconversion or by a single
serologic titer of _____ in patients with a supporting
history and clinical symptoms.
a. 1:2
b. 1:16
c. 1:80
d. 1:160
c. 1:80
In the eastern United States, babesiosis is caused by:
a. B. microti
b. B. canis
c. B. bovis
d. B. equi
a. B. microti
Babesiosis is characterized by:
a. Fever
b. Fatigue
c. Hemolytic anemia
d. All of the above
d. All of the above
Babesia organisms can be found in:
a. Peripheral blood
b. Sputum
c. Synovial fluid
d. Various exudates
a. Peripheral blood
West Nile virus causes:
a. Encephalitis
b. Polio
c. Measles
d. Arthritis
a. Encephalitis
West Nile virus is transmitted by:
a. Dogs
b. Cats
c. Rats
d. Mosquitoes
d. Mosquitoes
- Definitive diagnosis of ehrlichiosis requires:
a. A complete blood count
b. Detection of the presence of lymphocytopenia
c. Acute and convalescent serum antibody titers
d. Direct microscopic observation of inclusions in
leukocytes
c. Acute and convalescent serum antibody titers
