-Also called Theileria equi.
(Because it form schizonts in the lymphocytes)
-It is an intra-erythrocytic protozoa.
-It multiply by binary fission.
-They are small in size(2µm) with round, oval or double pear shaped.
-some parasites divide into 4 organisms to form maltese cross.
-It moves by gliding.
-It is a heteroxenous parasite
Invertebrate host (vector)
2 or 3 host hard tick
-It is transmitted trans-stadially by 2 or 3 host
ticks( in which the larva is infected and is
transmitted to the other stages – the parasite
invade the whole body of the tick except the
-So the infected become free
from the parasite after
transmitting it to
the vertebrate host
-The infective stage is
- The sporozoite form
schizont in the lymphocyte
before invading RBCs.
-It is also known as red water fever or piroplasmosis.
-It is a highly pathogenic and highly distributed
disease which can infect horses, donkeys, cattle,
buffaloes, sheeps, goats, dogs, cats and human
according to babesia spp .
Increase in body
Due to hemolytic
action of parasite
1-Microscopic examination of blood smears stained
Indirect Fluorescent Antibody Test (IFAT)
Complement Fixation Test (CFT)
Enzyme Linked Immunosorbent Assay (ELISA)
3-Polymerase Chain Reaction (PCR)
in case of
-By the control of the ticks
-The newly imported horses must be checked
-The infected horses must be treated from
ticks to prevent babesia transmission
-Horses may be sprayed by acaricides