Publications by authors named "John D Grewar"

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Reasons to be fearful? Rising proportions of positive faecal worm egg counts among UK horses (2007-2023).
Fleur Whitlock, Jan van Dijk, Jane E Hodgkinson, John Duncan Grewar, J Richard Newton

Equine Vet J· November 2025

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Correction: Modelling African horse sickness emergence and transmission in the South African control area using a deterministic metapopulation approach.
Joanna N de Klerk, Erin E Gorsich, John D Grewar, Benjamin D Atkins, Warren S D Tennant

PLoS Comput Biol· August 2025

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Assessment of sensitivity and specificity of bacterial culture and the VetMAX™ MastiType Multi Kit in detecting Streptococcus uberis and Escherichia coli in milk samples from dairy cows with clinical mastitis in subtropical Australia.
Tasneem Imam, Sara Horsman, Ben Wood, John D Grewar, Charlotte Langhorne

Prev Vet Med· December 2024

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Bacterial culture and susceptibility test results for clinical mastitis samples from Australia's subtropical dairy region.
Charlotte Langhorne, Sara Horsman, Caitlin Wood, Rachael Clark, Rochelle Price, John D Grewar

J Dairy Sci· February 2024

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Immunocontraceptive Efficacy of Native Porcine Zona Pellucida (pZP) Treatment of Nevada's Virginia Range Free-Roaming Horse Population.
Martin L Schulman, Nicole K Hayes, Tracy A Wilson, John D Grewar

Vaccines (Basel)· January 2024

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Modelling African horse sickness emergence and transmission in the South African control area using a deterministic metapopulation approach.
Joanna N de Klerk, Erin E Gorsich, John D Grewar, Benjamin D Atkins, Warren S D Tennant

PLoS Comput Biol· September 2023

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Cars dent, horse riders break: Analysis of police-recorded injury incidents involving ridden horses on public roads in Great Britain.
Danica Pollard, John Duncan Grewar

J Safety Res· February 2023

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Novel Hendra Virus Variant Detected by Sentinel Surveillance of Horses in Australia.
Edward J Annand, Bethany A Horsburgh, Kai Xu, Peter A Reid, Ben Poole, John D Grewar

Emerg Infect Dis· March 2022

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An entry risk assessment of African horse sickness virus into the controlled area of South Africa through the legal movement of equids.
John D Grewar, Johann L Kotze, Beverly J Parker, Lesley S van Helden, Camilla T Weyer

PLoS One· October 2021

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Equestrian Road Safety in the United Kingdom: Factors Associated with Collisions and Horse Fatalities.
Danica Pollard, John Duncan Grewar

Animals (Basel)· December 2020

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Post-outbreak African horse sickness surveillance: A scenario tree evaluation in South Africa's controlled area.
John Duncan Grewar, Thibaud Porphyre, Evan S Sergeant, Camilla Theresa Weyer, Peter Neil Thompson

Transbound Emerg Dis· September 2020

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Editorial: Risk-Based Evidence for Animal Health Policy.
Lisa A Boden, Harriet K Auty, Amy Delgado, John D Grewar, Amy D Hagerman

Front Vet Sci· September 2020

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Socio-economic impacts of working horses in urban and peri-urban areas of the Cape Flats, South Africa.
Joanna N De Klerk, Melvyn Quan, John D Grewar

J S Afr Vet Assoc· April 2020

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Assessing the potential of plains zebra to maintain African horse sickness in the Western Cape Province, South Africa.
Thibaud Porphyre, John D Grewar

PLoS One· March 2020

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Establishing post-outbreak freedom from African horse sickness virus in South Africa's surveillance zone.
John Duncan Grewar, Evan S Sergeant, Camilla Theresa Weyer, Lesley Susan van Helden, Beverley Joan Parker

Transbound Emerg Dis· November 2019

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A field investigation of an African horse sickness outbreak in the controlled area of South Africa in 2016.
John Duncan Grewar, Camilla Theresa Weyer, Gert Johannes Venter, Lesley Susan van Helden, Phillippa Burger

Transbound Emerg Dis· March 2019

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Paratuberculosis in a domestic dog in South Africa.
Michele A Miller, Sewellyn C Davey, Lesley S Van Helden, Frank Kettner, Sandy M May, John D Grewar

J S Afr Vet Assoc· March 2017

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African Horse Sickness Caused by Genome Reassortment and Reversion to Virulence of Live, Attenuated Vaccine Viruses, South Africa, 2004-2014.
Camilla T Weyer, John D Grewar, Phillippa Burger, Esthea Rossouw, Carina Lourens

Emerg Infect Dis· December 2016

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The economic impact of Bluetongue and other orbiviruses in sub-Saharan Africa, with special reference to Southern Africa.
John Duncan Grewar

Vet Ital· September 2016

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Quantitative Risk Assessment for African Horse Sickness in Live Horses Exported from South Africa.
Evan S Sergeant, John D Grewar, Camilla T Weyer, Alan J Guthrie

PLoS One· July 2016

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Development of three triplex real-time reverse transcription PCR assays for the qualitative molecular typing of the nine serotypes of African horse sickness virus.
Camilla T Weyer, Christopher Joone, Carina W Lourens, Mpho S Monyai, Otto Koekemoer, John D Grewar

J Virol Methods· October 2015

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Equine encephalosis in Thoroughbred foals on a South African stud farm.
John D Grewar, Peter N Thompson, Carina W Lourens, Alan J Guthrie

Onderstepoort J Vet Res· September 2015

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