18 Questions
What is the main mode of transmission of Theileria?
Stage to stage transmission
Which cell type is primarily infected during the schizogony stage of Theileria in the vertebrate host?
Lymphocytes
What is the significance of infecting red blood cells (RBCs) in the pathogenesis of Theileria?
It enhances transmission to the vector
Which stage of Theileria life cycle occurs in the tick's midgut?
Gametogony
What differentiates Theileriosis (East Coast Fever) from other tick-borne diseases?
Transovarian transmission
What is the key factor that influences the severity of Theileria infection in imported animals?
Genetic resistance
What is the main clinical sign of Theileriosis?
Fever above 42°C
Which species of Theileria causes East Coast fever in Eastern and Southern Africa?
T.parva
Which region is affected by tropical theileriosis caused by T.annulata?
North Africa
What is a significant factor that influences the pathogenesis of Theileria?
Age and condition of the host
Which is the only species of economic significance infecting small ruminants?
T.hirci
What can be the mortality rate in fully susceptible cattle with Theileriosis?
Nearly 100%
Which of the following statements about Anaplasma is correct?
They multiply through binary fission and are transmitted from RBCs to another through intercellular bridges.
Which species of Anaplasma is known to cause malignant anaplasmosis in cattle?
Anaplasma marginale
What is the primary mode of transmission for Anaplasma species?
Transmitted by hard ticks
Which of the following statements about the pathogenesis of anaplasmosis is correct?
The acute phase is characterized by marked anemia and petechial hemorrhages, especially on the mucous membranes.
Which of the following Anaplasma species primarily affects sheep and goats?
Anaplasma ovis
Where are Anaplasma organisms typically located within the infected red blood cells (RBCs)?
Near the center or margin of RBCs
Test your knowledge about tick-borne diseases such as parva disease, Mediterranean theileriosis, and East coast fever. Learn about the transmission, multiplication in hosts, and effects on red blood cells caused by Babesia and Theileria.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
