Babesia spp Flashcards
no oocyst.
Subclass Piroplasmia
Common tick-borne parasite of domestic and wild animals.
Babesia spp.
Parasites of red blood cells, causes?
malaria-like infections
No intracellular pigment in developmental stages.
Babesia spp.
Rare zoonotic human infection, natural host are the rodents and deers.
Babesia spp.
white-footed mouse.
Peromyscus leucops
[2] Types of Human Babesiosis
- B. microti
- B. divergens
located in United States.
[human babesiosis]
B. microti
Reservoir — cattle, ruminents
[human babesiosis]
B. divergens
Reservoir — field mice, voles
[human babesiosis]
B. microti
Vector — Ixodes scapularis (black-legged tick) lxodes dammiini
[human babesiosis]
B.microti
Vector — Ixodes ricinus
[human babesiosis]
B. divergens
cases (~300)
[human babesiosis]
B. microti
cases (~30)
[human babesiosis]
B. divergens
fatality (5%)
[human babesiosis]
B. microti
fatality (50%)
[human babesiosis]
B. divergens
Common species diagnosed in human.
Babesia microti
Small rings within the red blood cell, very much like Plasmodium falciparum with a darkly staining nucleus and very little cytoplasm.
Babesia microti
It do not have associated pigment in the
red blood cell.
Babesia microti
Asexual multiplication by binary fission in the RBC with production of merozoite that invade other RBC.
Babesia microti
When taken up by the ticks, there is complex cycle of multiplication that includes a sexual stage, resulting ultimately in the presence of the parasites in the salivary gland of the tick.
Babesia microti
Definitive host of Babesia microti?
tick
Transmission occurs from an animal to a human, normally using the northern deer tick or black-legged tick (Ixodes scapularis) as the vector.
Definitive host of Babesia microti
Transmitted by the tick Ixodes ricinus.
Babesia divergens
Main agent of bovine babesiosis, or red water fever in Europe.
Babesia divergens
It can also infect immunocompromised humans, causing medical emergencies characterized by rapid fulmination and parasitemias that may exceed 70%
Babesia microti
