Classification of Sporozoans (Toxoplasma gondii)

Question 1

This class of sporozoans identify cats as their definitive hosts?

Answer 1

Toxoplasma gondii

Question 2

This diagnosis is most likely for an immunosuppressed patient with focal
NEUROLOGIC signs (T. gondii)

Answer 2

cerebral toxoplasmosis

Question 3

TRUE or FALSE: cats are the ONLY hosts for Toxoplasma gondii?

Answer 3

FALSE: The definitive host of T. gondii is the cat, but the parasite can be carried by many warm-blooded animals (birds or mammals).

Question 4

What class of species if the causative agent for toxoplasmosis?

Answer 4

T. gondii

Question 5

TRUE OR FALSE: T. gondii can be transferred during pregnancy?

Answer 5

TRUE: It can have serious or fatal effects on a fetus if the mother
contracts it during pregnancy

Question 6

TRUE OR FALSE: the oocyst of T. gondii can be present in humans?

Answer 6

FALSE: Present in cats and other felines (not in
humans

Question 7

Shape of the oocyst (T. gondii); structure; How is it made?

Answer 7

Spherical or oval; contains sporoblast; Sexual reproduction

Question 8

This morphology of T. gondii occurs in chronic infection and it is formed when parasites multiply and produce a wall within host cell

Answer 8

Tissue cyst

Question 9

These are forms of trophozoite that are slowly multiplying and are contained in a tissue cyst?

Answer 9

Bradyzoites

Question 10

This morphological phase of T. gondii is seen during acute infection; crescent shaped when it infects; oval shaped when entering the host; multiples asexually?

Answer 10

Tachyzoite

Question 11

TRUE OR FALSE: severe symptoms are experienced when a person in infected with T. gondii?

Answer 11

FALSE: Mostly asymptomatic, except for:
- Infection during pregnancy (causes fetal
malformation)
- Infection in immuno-suppressed

Question 12

How is t. gondii detected? (Disgnostic method)

Answer 12

Serology

Question 13

Give 3 symptoms that is indicated with T. gondii?

Answer 13

Any of the following:
anorexia
weight loss
lethargy (lack of energy)
difficulty breathing (because of pneumonia)
eye inflammation
fever
swollen lymph nodes

Question 14

Diagnostic methods for T. gondii, name 5 for specimen technique? for specimen. HINT: Ly Bo C Bro Pe

Answer 14

Lymph node biopsy
Bone marrow aspiration
CSF
Broncho alveolar lavage
Peritoneal fluid

Question 15

Diagnostic method (Lab procedure) that allows you to Detect: Tachyzoite? Explain

Answer 15

Direct microscopy
Smear is taken in a glass slide → air dry → Leishman/Giemsa stain

Question 16

In a culture lab procedure to detect T. gondii, what is observed?

Answer 16

Bradyzoite

Question 17

What is the treatment for T. gondii called?

Answer 17

TRIPLE THERAPY

Question 18

Explain Triple Therapy?

Answer 18

Sulfadiazine-pyrimethamine-Corticosteroids

Question 19

Toxoplasmosis in immunocompromised patients are manifested as what medical disease?

Answer 19

Toxoplasmic encephalitis

Question 20

Name 3 medical abnormalities a fetus can acquire if T. gondii passes through the placenta?

Answer 20

Microcephaly
Hydrocephalus
Chorioretinitis