Question 1

Match the types of bonding with the correct definition.
-The PCR assay for T. gondii can be performed on

Accepted Answer

A)  serum or plasma.
B)  fresh or frozen biopsy tissue.
C)  cerebrospinal fluid.
D)  All of the above. D

Question 2

Match the types of bonding with the correct definition.
-Symptoms of acquired T. gondii infection can

Accepted Answer

A)  be mild.
B)  resemble infectious mononucleosis.
C)  cause a urinary tract infection.
D)  Both A and B. D

Question 3

Match the types of bonding with the correct definition.
-Toxoplasma-infected mothers who are not treated can give birth to a(n)

Accepted Answer

A)  less than term infant.
B)  underweight infant.
C)  congenitally infected infant.
D)  normal, healthy infant. C

Question 4

Match the types of bonding with the correct definition.
-Major sources of increasing human infection with T. gondii include all the following except

Accepted Answer

A)  fecal contamination of food with the T. gondii organism.
B)  infected meat.
C)  bloody body fluids.
D)  raw infected milk.

Question 5

Match the types of bonding with the correct definition.
-After IgM-positive sera undergo confirmatory testing, the results are interpreted as a(n)

Accepted Answer

A)  recently acquired infection.
B)  infection acquired in the past.
C)  false-positive test result.
D)  All of the above.

Question 6

Match the types of bonding with the correct definition.
-The best evidence of toxoplasmosis infection is a significant change in

Accepted Answer

A)  two appropriately timed specimens.
B)  acute and convalescent specimens.
C)  two appropriate specimens analyzed at the same time in the laboratory.
D)  All of the above.

Question 7

Match the types of bonding with the correct definition.
-IgM antibodies to T. gondii in an adult are an indication of

Accepted Answer

A)  current or recent infection.
B)  chronic infection.
C)  past infection.
D)  antibody transmitted from another person.

Question 8

Match the types of bonding with the correct definition.
-The Centers for Disease Control and Prevention (CDC) suggests that any confirmed equivocal or ____________ test results for toxoplasmosis should be retested using a different assay.

Accepted Answer

A)  positive
B)  negative
C)  questionable
D)  prenatal

Question 9

Match the types of bonding with the correct definition.
-Congenital toxoplasmosis can result in

Accepted Answer

A)  central nervous system (CNS)  malformation.
B)  prenatal mortality.
C)  congenital heart defects.
D)  Both A and B.

Question 10

Match the types of bonding with the correct definition.
-The definitive host of Toxoplasma gondii is the

Accepted Answer

A)  dog.
B)  house cat.
C)  chicken.
D)  rodent class.

Question 11

Match the types of bonding with the correct definition.
-The preferred method for detection of T. gondii is

Accepted Answer

A)  culture.
B)  ELISA.
C)  IFA.
D)  PCR.

Question 12

Match the types of bonding with the correct definition.
-All mammals can transmit T. gondii by

Accepted Answer

A)  casual contact.
B)  transplacental transmission.
C)  sexual contact.
D)  None of the above.

Question 13

Match the types of bonding with the correct definition.
-Transfusion-transmitted toxoplasmosis is associated with

Accepted Answer

A)  packed red blood cells.
B)  platelet concentrates.
C)  leukocyte concentrates.
D)  Either B or C.

Question 14

Match the types of bonding with the correct definition.
-Toxoplasma gondii antibody assay can demonstrate antibodies within __________ after infection.

Accepted Answer

A)  2 days
B)  1 week
C)  2 weeks
D)  1 month

Question 15

Match the types of bonding with the correct definition.
-The avidity result is determined using

Accepted Answer

A)  ratios of antibody titration curves of urea-treated and untreated sera.
B)  titers of antibody in preinfection and postinfection specimens.
C)  amniotic fluid versus serum.
D)  Both B and C.

Question 16

Match the types of bonding with the correct definition.
-Any positive result in a pregnant patient confirmed as positive by a second reference laboratory should be evaluated by

Accepted Answer

A)  amniocentesis testing by PCR for T. gondii.
B)  IgM, IgA, and IgE ELISAs.
C)  Sabin-Feldman dye test (IgG) .
D)  IgE immunosorbent agglutination assay.

Exam 19: Toxoplasmosis

Match the types of bonding with the correct definition. -The PCR assay for T. gondii can be performed on

Match the types of bonding with the correct definition. -Symptoms of acquired T. gondii infection can

Match the types of bonding with the correct definition. -Toxoplasma-infected mothers who are not treated can give birth to a(n)

Match the types of bonding with the correct definition. -Major sources of increasing human infection with T. gondii include all the following except

Match the types of bonding with the correct definition. -After IgM-positive sera undergo confirmatory testing, the results are interpreted as a(n)

Match the types of bonding with the correct definition. -The best evidence of toxoplasmosis infection is a significant change in

Match the types of bonding with the correct definition. -IgM antibodies to T. gondii in an adult are an indication of

Match the types of bonding with the correct definition. -The Centers for Disease Control and Prevention (CDC) suggests that any confirmed equivocal or ____________ test results for toxoplasmosis should be retested using a different assay.

Match the types of bonding with the correct definition. -Congenital toxoplasmosis can result in

Match the types of bonding with the correct definition. -The definitive host of Toxoplasma gondii is the

Match the types of bonding with the correct definition. -The preferred method for detection of T. gondii is

Match the types of bonding with the correct definition. -All mammals can transmit T. gondii by

Match the types of bonding with the correct definition. -Transfusion-transmitted toxoplasmosis is associated with

Match the types of bonding with the correct definition. -Toxoplasma gondii antibody assay can demonstrate antibodies within __________ after infection.

Match the types of bonding with the correct definition. -The avidity result is determined using

Match the types of bonding with the correct definition. -Any positive result in a pregnant patient confirmed as positive by a second reference laboratory should be evaluated by