Parasites have developed clever and diverse ways of making sure they’re carried from one generation to the next and spread through their hosts’ bodies— not surprising since their lives depend on it. When some viruses want to ensure safe passage to the next generation, they incorporate their DNA right into the host’s genome. Others link their genome to host chromosomes so it gets carried along w...

In 3 out of 4 attempts strains of a Theileria sp. of low virulence were isolated in the laboratory by feeding adult Rhipicephalus appendiculatus collected from the field on susceptible cattle. One of the strains, previously identified as Theileria? taurotragi (Tzaneen), was found to be serologically cross reactive with the other 2 strains. It was concluded that T.? taurotragi is prevalent in So...

Theileria annulata, a protozoan parasite of cattle and domestic buffaloes, is transmitted by ticks of the genus Hyalomma, and causes a disease named Mediterranean or tropical theileriosis. In this research 50 cattle naturally infected with Theileria annulata were treated with the extract of the plant Peganum harmala. The treatment was continued for 5 days, the dose of the extract being 5 mg/kg ...

*Corresponding author: Mohamed Gharbi, DVM, MSc, PhD, Associate Professor, Laboratory of Parasitology, National School of Veterinary Medicine, University of Manouba, 2020 Sidi Thabet, Tunisia. Tel: +216 71 552 200 E-mail: [email protected] Foundation Project: supported by Ministry of Higher Education, Scientific Research and Information, Technology and Communication, Tunisia and the Deutsche...

Cattle were infected with three isolates of Theileria parva and treated with halofuginone lactate during acute clinical disease. The health, weight gain and carrier state of the cattle were monitored for 15 months. Limited treatment rapidly reduced fever and parasitosis but parasite recrudescences occurred and 12 out of 21 treated cattle died. Persistent carrier states were identified with two ...

more than 185 species, strains and unclassified theileria parasites are categorized in the entrez taxonomy. the accurate diagnosis and proper identification of the causative agents are important for understanding the epidemiology, prevention and appropriate treatment. this study aims to discuss the importance of two genes of theileria annulata 18s ribosomal rna (18s rrna) and theileria annulata...

For the evaluation of the epidemiology of Theileria equi and Babesia caballi in a herd of 510 horses in SW Mongolia, several mathematical models of the transmission dynamics were constructed. Because the field data contain information on the presence of the parasite (determined by PCR) and the presence of antibodies (determined by IFAT), the models cater for maternal protection with antibodies,...

BROCKLESBY D. W., SELLW~~D S. A. and HARNESS E., 1972. Some characteristics of a strain of Theileria mutans (Theiler, 1906) isolated from cattle in the County of Kent, England and maintained in splenectomized calves. International Journal for Parasitology, 2: 265-271. A strain of T. mutans was isolated from British cattle and maintained by blood inoculation in splenectomized calves. The strain ...

Intracellular schizonts of the apicomplexans Theileria annulata and Theileria parva immortalize bovine leucocytes thereby causing fatal immunoproliferative diseases. Buparvaquone, a hydroxynaphthoquinone related to parvaquone, is the only drug available against Theileria. The drug is only effective at the onset of infection and emerging resistance underlines the need for identifying alternative...

The Theileria parva carrier-state in cattle on commercial farms on Zimbabwe was investigated using parasitological and serological methods. The proportion of cattle showing Theileria piroplasms on two farms, which had recent histories of disease outbreaks, were 64% (n = 106, total of heifers and weaned calves examined) and 71.5% (n = 60) while the proportion of T. parva antibodies for the same ...