Chapter 6: Sporozoa: Babesia

Question 1

Class of Babesia

Answer 1

Aconoidasida

Question 2

Order of Babesia

Answer 2

Piroplasmida

Question 3

Blood spp./spp. in Babesia

Answer 3

1) Babesia microti

2) Babesia divergens

Question 4

1) develops after the sporozoites infects the RBC
2) this form resembles the ring form of Plasmodium infections
3) absence of malarial pigment (hemozoin) and of Schuffner’s, Ziemann’s or Maurer’s dot

Answer 4

Trophozoites

Question 5

1) resembles the Maltese cross

2) undergo binary fission in the human host to produce more sporozoites

Answer 5

Merozoites

Question 6

Stain use that will result in an accurate diagnosis

Answer 6

Wright’s stain

Question 7

Are the specimens of choice for the laboratory diagnosis of babesiosis

Answer 7

Giemsa-stained peripheral blood film

Question 8

The specimen of choice for the recovery of Babesia

Answer 8

Blood

Question 9

1) 2 test used in Babesia
2) generally best used for diagnosing patients with a low parasitemia or in donor blood supply screening and epidemiologic studies
3) valuable for the speciation of Babesia

Answer 9

1) Serologic tests

2) PCR techniques

Question 10

How many weeks does a patient is exposed to Babesia prior to onset of symptoms

Answer 10

1-4 weeks

Question 11

Infectious jaundice in dogs found in Bulacan

Answer 11

Babesia canis

Question 12

Red water syndrome in Carabaos

Answer 12

Babesia bigemia

Question 13

2 Babesia spp found in the Philippines

Answer 13

Babesia canis and Babesia bigemia

Question 14

2 Morphology of Babesia microti and Babesia bigemia

Answer 14

Trophozoites and merozoites

Question 15

Babesia microti is commonly found areas of _____

Answer 15

Southern New England, such as Nantucket.

Question 16

The vector most commonly associated with the transmission of Babesia microti

Answer 16

Ixodes dammini

Question 17

The principal reservoir host for this infection is the _____

Answer 17

Peromyscus leucopus or white footed mouse

Question 18

Babesia divergens is commonly found in

Answer 18

European countries

Question 19

Vector of Babesia divergens

Answer 19

Ixodes ricinus

Question 20

Principal reservoir host of Ixodes ricinus

Answer 20

Cattle and rabbits

Question 21

Tends to be the more severe of the two parasitic infections and can be deadly

Answer 21

Babesia divergens

Question 22

Tends to be benign and self-limiting

Answer 22

Babesia microti

Question 23

Disease with Babesia spp usually infects these type of people (3)

Answer 23

• Older adult
• Immunosuppressed
• Splenectomized patients

Question 24

Phylum of Babesia

Answer 24

Apicomplexa