Publications
2025
GI-NemaTracker - A farm system-level mathematical model to predict the consequences of gastrointestinal parasite control strategies in sheep.
Benson, L., Kyriazakis, I., Fox, N., Howell, A., Innocent, G. T., Kenyon, F., . . . Ewing, D. A. (2025). GI-NemaTracker - A farm system-level mathematical model to predict the consequences of gastrointestinal parasite control strategies in sheep.. International journal for parasitology, S0020-7519(25)00070-0. doi:10.1016/j.ijpara.2025.04.008
WITHDRAWN: GLOWORM-META: Modelling gastrointestinal nematode metapopulation dynamics to inform cattle biosecurity research
Sustainable control of parasites in ewes (SCOPE): pre-registration of protocol for a randomised controlled trial on the use of moxidectin in ewes at lambing time.
2024
Update on liver fluke in sheep and cattle
Howell, A. (2024). Update on liver fluke in sheep and cattle. Livestock, 29(4), 162-166. doi:10.12968/live.2024.0007
2023
Is the Ollerenshaw fasciolosis forecasting model fit for the 21st century?
Howell, A., Caminade, C., Brulisauer, F., Mitchell, S., & Williams, D. (2023). Is the Ollerenshaw fasciolosis forecasting model fit for the 21st century?. VETERINARY RECORD, 193(1). doi:10.1002/vetr.2781
2022
The successes and challenges of implementing sustainable parasite control on three Welsh dairy farms
Thomas, E., Williams, D., Reigate, C., Hopkins, J. P., Carroll, D., Harries, E., . . . Redman, E. (2022). The successes and challenges of implementing sustainable parasite control on three Welsh dairy farms. Cattle Practice, 30(1), 58.
2020
Anaerobic fermentation results in loss of viability of <i>Fasciola hepatica</i> metacercariae in grass silage
John, B. C., Davies, D. R., Howell, A. K., Williams, D. J. L., & Hodgkinson, J. E. (2020). Anaerobic fermentation results in loss of viability of <i>Fasciola hepatica</i> metacercariae in grass silage. VETERINARY PARASITOLOGY, 285. doi:10.1016/j.vetpar.2020.109218
Horses are susceptible to natural, but resistant to experimental, infection with the liver fluke, Fasciola hepatica
Quigley, A., Sekiya, M., Garcia-Campos, A., Paz-Silva, A., Howell, A., Williams, D. J. L., & Mulcahy, G. (2020). Horses are susceptible to natural, but resistant to experimental, infection with the liver fluke, Fasciola hepatica. Veterinary Parasitology, 281, 109094. doi:10.1016/j.vetpar.2020.109094
<i>Fasciola hepatica</i> in UK horses
Howell, A. K., Malalana, F., Beesley, N. J., Hodgkinson, J. E., Rhodes, H., Sekiya, M., . . . Williams, D. J. L. (2020). <i>Fasciola hepatica</i> in UK horses. EQUINE VETERINARY JOURNAL, 52(2), 194-199. doi:10.1111/evj.13149
The Epidemiology and Control of Liver Flukes in Cattle and Sheep
Howell, A. K., & Williams, D. J. L. (2020). The Epidemiology and Control of Liver Flukes in Cattle and Sheep. Veterinary Clinics of North America: Food Animal Practice, 36(1), 109-123. doi:10.1016/j.cvfa.2019.12.002
2019
Co-infection of cattle with <i>Fasciola hepatica</i> or <i>F</i>. <i>gigantica</i> and <i>Mycobacterium bovis</i>: A systematic review
Howell, A. K., McCann, C. M., Wickstead, F., & Williams, D. J. L. (2019). Co-infection of cattle with <i>Fasciola hepatica</i> or <i>F</i>. <i>gigantica</i> and <i>Mycobacterium bovis</i>: A systematic review. PLOS ONE, 14(12). doi:10.1371/journal.pone.0226300
Lack of efficacy of triclabendazole against Fasciola hepatica is present on sheep farms in three regions of England, and Wales
Kamaludeen, J., Graham-Brown, J. J. D., Stephens, N., Miller, J., Howell, A., Beesley, N., . . . Williams, D. (2019). Lack of efficacy of triclabendazole against Fasciola hepatica is present on sheep farms in three regions of England, and Wales. The Veterinary Record. doi:10.1136/vr.105209
2018
Co-infection with Fasciola hepatica may increase the risk of Escherichia coli O157 shedding in British cattle destined for the food chain
Howell, A. K., Tongue, S. C., Currie, C., Evans, J., Williams, D. J. L., & McNeilly, T. N. (2018). Co-infection with Fasciola hepatica may increase the risk of Escherichia coli O157 shedding in British cattle destined for the food chain. Preventive Veterinary Medicine, 150, 70-76. doi:10.1016/j.prevetmed.2017.12.007
2017
Study on the impact of liver fluke infection on the welfare of horses
Howell, A., Williams, D., Malalana, F., Archer, D., Hodgkinson, J., & Clough, H. (2017). Study on the impact of liver fluke infection on the welfare of horses. VETERINARY RECORD, 180(12). doi:10.1136/vr.j1405
The interaction between Fasciola hepatica and other pathogens naturally co-infecting dairy and beef cattle in the UK
Howell, A. K. (2017, March 14). The interaction between Fasciola hepatica and other pathogens naturally co-infecting dairy and beef cattle in the UK.
Intestinal schistosomiasis in Uganda at high altitude (> 1400 m): malacological and epidemiological surveys on Mount Elgon and in Fort Portal crater lakes reveal extra preventive chemotherapy needs
Stanton, M. C., Adriko, M., Arinaitwe, M., Howell, A., Davies, J., Allison, G., . . . Stothard, J. R. (2017). Intestinal schistosomiasis in Uganda at high altitude (> 1400 m): malacological and epidemiological surveys on Mount Elgon and in Fort Portal crater lakes reveal extra preventive chemotherapy needs. INFECTIOUS DISEASES OF POVERTY, 6. doi:10.1186/s40249-017-0248-8
2016
A model to assess the efficacy of vaccines for control of liver fluke infection
Turner, J., Howell, A., McCann, C., Caminade, C., Bowers, R. G., Williams, D., & Baylis, M. (2016). A model to assess the efficacy of vaccines for control of liver fluke infection. SCIENTIFIC REPORTS, 6. doi:10.1038/srep23345
2015
Epidemiology and impact of Fasciola hepatica exposure in high-yielding dairy herds
Howell, A., Baylis, M., Smith, R., Pinchbeck, G., & Williams, D. (2015). Epidemiology and impact of Fasciola hepatica exposure in high-yielding dairy herds. Preventive Veterinary Medicine, 121(1-2), 41-48. doi:10.1016/j.prevetmed.2015.05.013
2014
Liver fluke - an overview for practitioners
Williams, D. J. L., Howell, A., Graham-Brown, J., Kamaludeen, J., & Smith, D. (2014). Liver fluke - an overview for practitioners. CATTLE PRACTICE, 22, 238-244. Retrieved from https://www.webofscience.com/
BOVINE TB Effect of liver fluke on the bovine TB skin test
Howell, A., & Williams, D. (2014). BOVINE TB Effect of liver fluke on the bovine TB skin test. VETERINARY RECORD, 175(10), 259. doi:10.1136/vr.g5558
2012
Bovine fasciolosis at increasing altitudes: Parasitological and malacological sampling on the slopes of Mount Elgon, Uganda
Howell, A., Mugisha, L., Davies, J., LaCourse, E. J., Claridge, J., Williams, D. J. L., . . . Stothard, J. R. (2012). Bovine fasciolosis at increasing altitudes: Parasitological and malacological sampling on the slopes of Mount Elgon, Uganda. PARASITES & VECTORS, 5. doi:10.1186/1756-3305-5-196