
Professor Severine Tasker
BSc (1st class), BVSc. (hons), DSAM, PhD, DipECVIM FHEA
Expertise
Passionate about feline medicine, haematological and infectious diseases. Focused on adopting a holistic approach to the care of cats.
Current positions
Honorary Professor of Feline Medicine
Bristol Veterinary School
Contact
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Biography
Séverine graduated from Bristol Veterinary School and worked for the PDSA before completing a Residency in Feline Medicine, funded by the then Feline Advisory Bureau at the Dick Vet School in Edinburgh. She obtained the RCVS Diploma in Small Animal Medicine in 1999 and then returned to Bristol where she completed a PhD in feline haemoplasmosis in 2002. She became a Diplomate of the European College of Veterinary Internal Medicine in 2003. Séverine remained at Bristol until late 2018, where she worked in the Feline Centre and Molecular Diagnostic Unit of Langford Vets and Bristol Veterinary School as Professor of Feline Medicine. She was then Chief Medical Officer for the Linnaeus Group, a group of highly respected practices across the UK, before moving into a Mars Veterinary Health role in 2024, where she oversees education and veterinary relations with a focus on the UK, Europe and Asia. Séverine has an honorary appointment at Bristol where she is involved in ongoing feline studies, research (including the Generation Pup project) and teaching.
Séverine is an RCVS Specialist in Feline Medicine. She has edited the BSAVA Manual of Feline Practice: A Foundation Manual. She sits on the Companion Animal Vector Borne Disease World Forum, Feline Expertise Parasitology and the European Advisory Board on Cat Diseases (https://www.abcdcatsvets.org/). Séverine is also a recipient of the BSAVA Woodrow Award for outstanding contributions in small animal veterinary medicine and the Petplan Charitable Trust Research Award for outstanding contributions in the field of veterinary research. She became a Fellow of the Royal College of Veterinary Surgeons in 2019.
Séverine is passionate about all things feline and her research and clinical fields of interest include infectious diseases, haematological disorders and longitudinal studies.
Research interests
My research focuses particularly on haemotropic mycoplasmas (haemoplasmas), a group of pathogens that can induce haemolysis of red blood cells, and feline coronavirus infections, which can result in the fatal disease of feline infectious peritonitis. I am also involved in research on vector borne diseases such as Leishmania and Babesia. I am also involved in the Veterinary School's Comparative and Clinical Research Group within the Population Health Research Theme.
Research keywords- Haemotropic mycoplasmas
- Haemoplasmas
- Mycoplasma haemofelis
- Feline infectious peritonitis
- Feline coronavirus infection
Haemotropic mycoplasma infections
I am involved in the investigation of haemotropic mycoplasmas (haemoplasmas), which are bacterial agents that can induce haemolytic anaemia in a range of host species. Most of our studies centre on the feline haemoplasmas but we have carried out research on a range of haemoplasma species including canine, rodent and human species. Our research has focused on: the development of novel polymerase chain reaction (PCR) assays and serological tests to detect haemoplasma infection, the phylogeny of haemoplasmas, the pathogenesis of the haemoplasma-associated anaemia and induced immunity, and genomic studies that have resulted in the first complete haemoplasma genomic sequence (Mycoplasma haemofelis). We have also investigated in vitro methods of haemoplasma cultivation and protective immunity.
Feline coronavirus (FCoV) infections
Feline coronavirus (FCoV) infection is very common in cats and can sometimes lead to the serious disease of feline infectious peritonitis (FIP). This was a common cause of death in young cats although effective antivirals such as GS-441524 are now often used to successfully treat FIP. Our research in this field is to ultimately help the diagnosis, prevention and treatment of this disease. Research involves the development of reliable diagnostic tests for the definitive diagnosis of FIP, evaluating treatment, deriving genome sequences of field coronavirus isolates, identification of feline coronavirus host receptors and the development of a so-called “reverse genetic” system for feline coronaviruses. The reverse genetic systemic involves constructing a copy of the virus in a form that can be changed in a specific way. This is a complex process but it will be of immense value in our basic research and, in the longer term, can be used to produce vaccines against FIP.
Projects and supervisions
Research projects
One Health Selection and Transmission of Antimicrobial Resistance
Principal Investigator
Role
Co-Investigator
Description
What are the risks that antimicrobial use in dairy cattle will lead to antimicrobial-resistant bacteria colonising humans in the local general public?Managing organisational unit
School of Cellular and Molecular MedicineDates
01/06/2016 to 01/12/2019
Serum metabolomics in feline mycobacterial disease: a pilot study
Role
Researcher
Managing organisational unit
Dates
01/03/2016 to 31/08/2017
Thesis supervisions
Publications
Selected publications
02/01/2025Feline Papillomatosis
Viruses
Retrospective study and outcome of 307 cats with feline infectious peritonitis treated with legally sourced veterinary compounded preparations of remdesivir and GS-441524 (2020-2022)
Journal of Feline Medicine and Surgery
Prevalence and risk factors for common respiratory pathogens within a cohort of pet cats in the UK
Journal of Small Animal Practice
Recent publications
01/01/2025Hemoplasmosis (Hemotropic Mycoplasmosis) in Cats
Plumb’s Pro
Association between training methods and owner-reported problem behaviours in dogs enrolled in the ‘Generation Pup’ longitudinal study in the UK
Journal of Veterinary Behavior
Feline Papillomatosis
Viruses
Fever
Ettinger’s Textbook of Veterinary Internal Medicine
Hemotropic Mycoplasmas
Ettinger’s Textbook of Veterinary Internal Medicine