Dr Umer Chaudhry, DVM, MSc, PhD
Associate Professor, Veterinary Parasitology
E-mail: Umer.Chaudhry@liu.edu
Dr Chaudhry graduated with a bachelor’s degree (DVM) in Veterinary Medicine in 2005; since then, he has pursued a MSc in Veterinary Parasitology, MSc in Molecular Biology, and MSc in Biomedicine from Sweden. He did his PhD in Veterinary Parasitology at the School of Veterinary Medicine, University of Calgary, Canada (2010-2015). Since finishing his PhD in 2015, he worked at the Royal (Dick) School of Veterinary Medicine, University of Edinburgh, UK (2015-2020). During this highly competitive BBSRC-sLoLa research fellowship, his research focuses on the arena of global food security to identify new major anthelmintic resistance genetic markers. He also worked at the School of Veterinary Medicine, University of Surrey, UK (2020-2022). During this competitive One Health EJP Horizon 2020 research fellowship, he was working on foodborne zoonosis and emerging threats of protozoa in the production of animals and humans. He has started working as an Associate Professor in the School of Veterinary Medicine, St George’s University Grenada, Caribbean (2023-2024).
Dr Chaudhry has been involved in teaching the veterinary parasitology and veterinary research module for BVM&S students at the Royal (Dick) Veterinary School Edinburgh. He also contributes to teaching veterinary parasitology and clinical skills to BVM&S students at the School of Veterinary Medicine Surrey. He teaches veterinary parasitology and clinical parasitology modules for DVM students at the St. George's School of Veterinary Medicine in Grenada, Caribbean. He supervise/co-supervisor of the University of Edinburgh and the University of Surrey PhD, MSc/VetMed resident and undergraduate (DVM, BSc, MBChb) students in their research projects. In addition, He is the external supervisor of postdoc, PhD and MSc students from Brazil, Pakistan, Sweden, and France.
Dr Chaudhry led research projects to study parasite epidemiology and antiparasitic drug resistance in animals to tackle production losses. He has developed high-throughput platforms for speciation and early resistance detection with implications for the broader advance of molecular diagnostics. He has investigated antiparasitic drug resistance regarding the effect of selection pressures, fitness cost and gene flow on their emergence and spread. He has increased his knowledge of the multiplicity of parasitic infections, and a better understanding of host-parasite relationships, host management and climate change in disease epidemiology. He has also investigated how parasite antigens can inform vaccine development, providing cross-protection against different host-derived parasite variants.
Dr Chaudhry has substantial experience in applying for research funding. As a principal investigator, he has secured funds from the Carnegie Trust Scotland SRGI-SGU and the Roslin Innovation Edinburgh. The BBSRC-Partnering award and USDA-National Institute of Food and Agriculture funds have been secured as a co-investigator. He holds the studentship funding from the BBSRC-FoodBioSystems DTP, EGRS/PCDS-University of Edinburgh, and FHMS-University of Surrey to supervise (primary/secondary) the PhD students. He also holds the International studentship funds from the Higher Education Commission of Pakistan-IRSIP to supervise the PhD students and Conselho Nacional de Desenvolvimento Científico e Tecnológico Brazil funds to supervise postdoctoral researchers. His commitment to quality research is shown through his ability to complete and disseminate work in high-quality research publications.
Publications - (selected manuscripts)
• Shoaib Ashraf, Ghulam Yasein, Qasim Ali, Kiran Afshan, Martha Betson, Neil Sargison, Umer Chaudhry (2025) Genetic diversity in diminazene resistance-associated P2 adenosine transporter-1 (AT-1) gene of Trypanosoma evansi (Animals: Parasite Epidemiology and Molecular Identification in Wild, Domestic, and Companion Animals DOI: 10.3390/ani15050756)
• R. F. Kelly, Umer Chaudhry, N. Sargison (2025) The dynamics of gastrointestinal nematodes present in co-grazed host species kept in a Scottish zoological collection (Veterinary Parasitology: Regional Studies and Reports DOI:10.1016/j.vprsr.2025.101227)
• Sargison, N.D, Umer Chaudhry, Costa-Junior, Zahid, O (2025) The diagnosis and vector potential of Ornithonyssus bacoti tropical rat mites in northern Europe (Veterinary Parasitology: Regional Studies and Reports DOI: 10.1016/j.vprsr.2025.101204).
• Amjad Ullah Khan, Sabika Firasat, Khalid Mashay Al-Anazi, Mohammad Abul Farah, Umer Chaudhry, Kiran Afshan, Bakhtiyor Kholmatov (2025) Resolving Taxonomic Ambiguities in Ascaris Species: Insights From a Scanning Electron Microscopy Study of Ascaris lumbricoides (Microscopy Research and Technique DOI: 10.1002/jemt.24776).
• Muhammad Asim Khan, Kiran Afshan, Sabika Firasat, Muhammad Abbas, Neil D. Sargison, Martha Betson, Umer Chaudhry (2024) Validation of deep amplicon sequencing of Dicrocoelium in small ruminants from northern regions of Pakistan (PLOS ONE DOI: 10.1371/journal.pone.0302455).
• Osama Zahid, Meghan Butler, Andy Hopker, Emily Freeman, Livio M. Costa Júnior, Umer Chaudhry, Neil Sargison (2024) Nemabiome metabarcoding shows a high prevalence of Haemonchus contortus and predominance of Camelostrongylus mentulatus in alpaca herds in the northern UK (Parasitology Research DOI: 10.1007/s00436-024-08226-w).
• Ben Jones, Kezia Kozel, Allen Jethro Alonte, Kennesa R. Klariz Llanes, Alexandra Juhász, Umer Chaudhry, Sara Roose, Peter Geldhof, Vicente Y. Belizario Jr, Peter Nejsum, J. Russell Stothard, E. James LaCourse, Arnoud H.M. van Vliet, Vachel Gay V. Paller, Martha Betson (2024) Worldwide absence of canonical benzimidazole resistance-associated mutations within β-tubulin genes from Ascaris (Parasites and Vectors DOI: 10.1186/s13071-024-06306-5).
• Juliane Friedrich, Richard I. Bailey, Andrea Talenti, Umer Chaudhry, Qasim Ali, Emmanuel F. Obishakin, Chukwunonso Ezeasor, Jessica Powell, Olivier Hanotte, Abdulfatai Tijjani, Karen Marshall, James Prendergast & Pamela Wiener (2024) Mapping restricted introgression across the genomes of admixed indigenous African cattle breeds (Genetic Selection Evolution doi: 10.1186/s12711-023-00861-8).
• Kiran Afshan, Sabahat Khan, Bilal Khan, Sobia Hussain, Sabika Firasat, Ghulam Narjis, Umer Chaudhry (2023) A new record of the occurrence of Trichuris skrjabini Baskakov, 1924 in goats of Pakistan (PLOS ONE doi.org/10.1371/journal.pone.0290906).
• Christian Klotz, Anna Rosa Sannella, Umer Chaudhry, Pavla Tůmová, Eva Nohýnková, Ralf Ignatius, Toni Aebischer, Martha Betson, Karin Troell, Simone M. Cacciò (2023) Extensive testing of a multi-locus sequence typing scheme for Giardia duodenalis assemblage A confirms its good discriminatory power (Parasites & Vectors doi.org/10.1186/s13071-022-05615-x).
• Muhammad Asim Khan, Kiran Afshan, Umer Chaudhry, Sabika Firasat, Neil D Sargison (2023) Histopathology and antibody responses describe the seasonal pattern of dicrocoeliosis in small ruminants in the himalayan ranges of Pakistan (Veterinary Parasitology doi.org/10.1016/j.vetpar.2023.109975)
• Muhammad Asim Khan, Kiran Afshan, Neil D Sargison, Martha Betson, Sabika Firasat, Umer Chaudhry (2023) Spatial distribution of Dicrocoelium in the himalayan ranges: potential impacts of ecological niches and climatic variables (Acta Parasitologica doi.org/10.1007/s11686-022-00634-1).
• Stephen R. Doyle, Roz Laing, Alison Morrison, David J. Bartley, Ray Kaplan, Umer Chaudhry, Neil Sargison, James A. Cotton, Collette Britton, Eileen Devaney (2022) Genomic landscape of drug response reveals novel mediators of anthelmintic resistance (Cell Report doi.org/10.1016/j.celrep.2022.111522).
• Qasim Ali, Osama Zahid, Moez Mhadhbi, George Raynes, Richard Birtles, Neil D. Sargison, Martha Betson, Umer Chaudhry (2022) Genetic characterisation of the Theileria annulata cytochrome b locus and its impact on buparvaquone resistance in ruminants (International Journal for Parasitology doi.org/10.1016/j.ijpddr.2022.08.004).
• Slater L, Ashraf S, Zahid O, Ali Q, Oneeb M, Akbar MH, Riaz MI, Afshan K, Sargison N, Umer Chaudhry (2022) Current methods for the detection of Plasmodium parasite species infecting humans (Current Research in Parasitology & Vector-Borne Diseases doi.org/10.1016/j.crpvbd.2022.100086).
• Janneke Wit, Matthew L. Workentine, Elizabeth Redman, James A. Cotton, Umer Chaudhry, Qasim Ali, Erik C. Andersen, Samuel Yeaman, James D. Wasmuth, John S. Gilleard (2022) Genomic signatures of selection associated with benzimidazole drug treatments in Haemonchus contortus field populations (International Journal for Parasitology doi.org/10.1016/j.ijpara.2022.07.004).
• Neil Sargison, Alex Chambers, Umer Chaudhry, Livio Costa Júnior, Stephen R. Doyle, Fiona Sargison, Margaret Sinclair, Osama Zahid (2022) Faecal egg counts and nemabiome metabarcoding highlight the genomic complexity of equine cyathostomin communities and provide insight into their dynamics in a Scottish native pony herd (International Journal for Parasitology doi.org/10.1016/j.ijpara.2022.08.002).
• Roz Laing, Stephen R. Doyle, Jennifer McIntyre, Kirsty Maitland, Ray Kaplan, Umer Chaudhry, Neil Sargison, Andy Tait, James A. Cotton, Collette Britton, Eileen Devaney (2022) Transcriptomic analyses implicate neuronal plasticity and chloride homeostasis in ivermectin resistance and recovery in a parasitic nematode (PLOS Pathogens doi.org/10.1371/journal.ppat.1010545).
• Ghulam Yasein, Osama Zahid, Emily Minter, Kamran Ashraf, Imran Rashid, Muhammad Zubair Shabbir, Martha Betson, Neil D Sargison, Umer Chaudhry (2022) A novel metabarcoded deep amplicon sequencing tool for disease surveillance and determining the species composition of Trypanosoma in cattle and other farm animals (Acta Tropica doi.org/10.1016/j.actatropica.2022.106416).
• A A Morrison, Umer Chaudhry, L Andrews, L Melville, S R Doyle, N D Sargison, D J Bartley (2022) Phenotypic and genotypic analysis of benzimidazole resistance in reciprocal genetic crosses of Haemonchus contortus (IJP-Drug & Drug Resistance doi.org/10.1016/j.ijpddr.2021.11.001).
• Nadia María López Ureña , Umer Chaudhry, Rafael Calero Bernal, Santiago Cano Alsua , Davide Messina , Francisco Evangelista , Martha Betson , Marco Lalle , Pikka Jokelainen, Luis Miguel Ortega Mora , Gema Álvarez García (2022) Environmental contamination with Toxoplasma gondii oocysts: a systematic review (MDPI-Microorganisms doi.org/10.3390/microorganisms10030517).
• Mian Abdul Hafeez, Muntazir Mehdi, Muhammad Abu Bakr Shabbir, Umer Chaudhry, Mashal M Almutairi (2022) Molecular characterization of Toxoplasma gondii in cats and its zoonotic potential for public health significance (MDPI-Pathogens doi.org/10.3390/pathogens11040437).
• Talenti A, Powell J, Hemmink JD, Cook EAJ, Wragg D, Jayaraman S, Tijjani A, Amanyire W, Muhanguzi D, Marshall K, Fisch A, Ferreira BR, Qasim A, Umer Chaudhry, Wiener P, Toye P, Morrison LJ, Connelley T, Prendergast JGD (2022) A cattle graph genome incorporating global breed diversity (Nature Communications Biology doi.org/10.1038/s41467-022-2860).
• Shoaib Ashraf, Débora Parrine, Muhammad Bilal, Umer Chaudhry, Mark Lefsrud, Xin Zhao (2022) Proteomic comparison of ivermectin sensitive and resistant Staphylococcus aureus clinical isolates reveals key efflux pumps as possible resistance determinants (MDPI-Antibiotics doi.org/10.3390/antibiotics11060759).
• Livio M Costa-Junior, Umer Chaudhry, Philip J Skuce, Seamus Stack, Neil D Sargison (2021) A loop-mediated isothermal amplification (LAMP) assay to identify isotype 1 β-tubulin locus SNPs in synthetic double-stranded Haemonchus contortus DNA (Journal of Parasitic Diseases doi.org/10.1007/s12639-021-01414-w).
• Zia Ur Rehman, Kirsty Martin, Osama Zahid, Qasim Ali, Martha Betson, Neil D Sargison, Umer Chaudhry (2021) High-throughput sequencing of Fasciola spp. shows co-infection and intermediate forms in Balochistan, but only Fasciola gigantica in the Punjab province of Pakistan (Infection, Genetics and Evolution doi.org/10.1016/j.meegid.2021.105012).
• Lucinda Slater, Martha Betson, Umer Chaudhary (2021) Current methods for the detection of antimalarial drug resistance in Plasmodium parasites infecting humans (Acta Tropica doi.org/10.1016/j.actatropica.2021.105828).
• Ayaz Shaukat, Qasim Ali, Neil D. Sargison, Umer Chaudhry (2021) Phylogenetic analysis suggest single and multiple origins of dihydrofolate reductase mutations in Plasmodium vivax (Acta Tropica doi.org/10.1016/j.actatropica.2020.105821).
• Zia Ur Rehman, Umer Chaudhry, Madoka Ichikawa-Seki (2021) Molecular characterization and phylogenetic analyses of Fasciola gigantica of buffaloes and goats in Punjab, Pakistan (Parasitology International doi.org/10.1016/j.parint.2021.102288).
• Evans, M.J., Umer Chaudhry, Sargison, N.D. (2021) A four-year observation of gastrointestinal nematode egg counts, nemabiome, and the benzimidazole resistance genotypes of Teladorsagia circumcincta on a Scottish sheep farm (International Journal for Parasitology doi.org/10.1016/j.ijpara.2020.10.007).
• Livio M Costa-Junior, Umer Chaudhry, Neil D. Sargison (2021) Nemabiome metabarcoding reveals differences between gastrointestinal nematode species infecting co-grazed sheep and goats (Veterinary Parasitology doi.org/10.1016/j.vetpar.2020.109339).
• Muhammad Asim Khan, Umer Chaudhry, Neil D. Sargison (2021) Molecular confirmation of Dicrocoelium dendriticum in the Himalayan ranges of Pakistan (Parasitology International doi.org/10.1016/j.parint.2020.102276).
• Umer Chaudhry, Neil Sargison, John Gilleard (2020) Contrasting patterns of isotype-1 β-tubulin allelic diversity in Haemonchus contortus and Haemonchus placei in the southern USA are consistent with a model of localised emergence of benzimidazole resistance (Veterinary Parasitology doi.org/10.1016/j.vetpar.2020.109240).
• Umer Chaudhry, Liam Morrison, Neil D. Sargison (2020) Contrasting population genetics of cattle- and buffalo-derived Theileria annulata (Ticks and Tick-borne Diseases doi.org/10.1016/j.ttbdis.2020.101595).
• Abdul Wahab, Neil D. Sargison, Umer Chaudhry (2020) A novel metabarcoded 18S ribosomal DNA sequencing tool for the detection of Plasmodium species in malaria positive patients (Infection, Genetics, and Evolution doi.10.1016/j.meegid.2020.104305).
• Zia Ur Rehman, Neil D. Sargison, Umer Chaudhry (2020) Genetic diversity and multiplicity of infection in Fasciola gigantica isolates of Pakistani livestock (Parasitology International doi.org/10.1016/ j.parint.2020.102071).
• Stephen R. Doyle, Alan Tracey, Roz Laing, Karen Brooks, Umer Chaudhry, Kirsty Maitland, Neil Sargison, Eileen Devaney, John S. Gilleard, James A. Cotton (2020) Extensive genomic and transcriptomic variation defines the chromosome-scale assembly of Haemonchus contortus, a model gastrointestinal worm (Nature Communications Biology doi: 10.1038/s42003-020-01377-3).
• Guilherme G. Verocai, Eric P. Hoberg, Umer Chaudhry, Susan J. Kutz (2020) The biogeography of the caribou lungworm, Varestrongylus eleguneniensis across northern North America (International Journal for Parasitology: Parasites & Wildlife doi.org/10.1016/j.ijppaw.2020.01.001).
• Guilherme G. Verocai, Umer Chaudhary, Manigandan Lejeune (2020) Diagnostic methods for detecting internal parasites of livestock (Veterinary Clinics of North America doi.org/10.1016/j.cvfa.2019.12.003).
• Sargison, N.D, Umer Chaudhry, Costa-Junior, L.M (2020) Investigation of a gemesid mite infestation in a UK textile mill caused by Dermanyssus gallinae (DeGeer, 1778) (Mesostigmata: Dermanyssidae) special lineage L1 (Parasitology International doi.org/10.1016/j.parint.2020.102146).
• Shoaib Ashraf, Muhammad Ashraf, Umer Chaudhry, Moneeb Ashraf, Khalid Munir (2020) Zoonotic and reverse zoonotic events of SARS-CoV-2 and their Impact on global health (Emerging Microbes and Infections doi.org/10.1080/22221751.2020.1827984).
• Tayyebah Sohail, Ali Zohaib, Umer Chaudhry, Jonas Wensman, Muhammad Zubair Shabbir (2020) Sentinel surveillance of selected veterinary and public health pathogens in camel population originating from Southern Punjab province of Pakistan (Acta Tropica doi.org/10.1016/j.actatropica.2020.105435).
• Aziz-ul-Rahman, Kuldeep Dhama, Qasim Ali, Umer Chaudhary, Jonas Wensman, Muhammad Zubair Shabbir (2020) Peste des petits ruminants in large ruminants, camels and unusual hosts (Veterinary Quarterly doi.org/10.1080/01652176.2020.1714096).
• Aziz Ul-Rahman, Umer Chaudhry, Muhammad Zubair Shabbir (2020) Update on foot and mouth disease in a range of wild hosts: a potential constraint in disease control efforts worldwide particularly in disease endemic settings (Acta Tropica doi.org/10.1016/j.actatropica.2020.105567).
• Neil D. Sargison, Madison MacLeay, Umer Chaudhry (2019) Development of amplicon sequencing for the analysis of benzimidazole resistance allele frequencies in field populations of GI nematodes (International Journal for Parasitology-Drug & Drug Resistance doi.org/10.1016/j.ijpara.2018.10.005).
• Neil D. Sargison, Kashif Shahzad, Umer Chaudhry (2019) A high throughput deep amplicon sequencing method to show the emergence and spread of Calicophoron daubneyi in United Kingdom cattle herds (Veterinary Parasitology doi.org/10.1016/j.vetpar.2019.02.007).
• Umer Chaudhry, Neil D. Sargison (2019) Development of a deep amplicon sequencing method to determine the proportional species composition of piroplasm haemoprotozoa as an aid in their control (Ticks and Tick-borne Diseases doi.org/10.1016/j.ttbdis.2019.101276).
• Jane Hodgkinson, Louise Matthews, Umer Chaudhry, Neil Sargison, Ray Kaplan, Stephen Doyle, Adrian Wolstenholme (2019) Refugia and anthelmintic resistance: concepts and challenges (International Journal for Parasitology-Drug & Drug Resistance doi: 10.1016/j.ijpddr.2019.05.001).
• Kim Hamer, Jennifer McIntyre, Umer Chaudhry, Valentina Busin, Neil Sargison (2019) The dynamics of ovine gastrointestinal nematode infections within ewe and lamb cohorts on three Scottish sheep farms (Preventive Veterinary Medicine doi.org/10.1016/j.prevetmed.2019.104752).
• Qasim Ali, Umer Chaudhry (2019) Overview of the Trichostorngyloidea (Journal of Advances in Parasitology doi.org/10.17582/journal.jap/2019/6.2.21.23).
• Qasim Ali, Umer Chaudhry (2019) Understanding of the molecular genetics of benzimidazole resistance in Haemonchus (Journal of Advances in Parasitology doi.org/10.17582/journal.jap/2019/6.2.24.34).
• Qasim Ali, Umer Chaudhry (2019) Rationale to understand anthelmintic resistance in parasitic nematodes (Journal of Advances in Parasitology doi.org/10.17582/journal.jap/2019/6.2.16.20).
• Aziz-ul-Rahman, Umer Chaudhary, Muhammad Zubair Shabbir (2019) Comparative clinico-pathological assessment of velogenic (sub-genotype VIIi) and mesogenic (sub-genotype VIm) Avian avulavirus 1 in chickens and pigeons (Avian Pathology doi.org/10.1080/03079457.2019.1648751).
• Muhammad Abu bakr Shabbir, Zubair Shabbir, Umer Chaudhry, Haihong Hao, Zonghui Yuan (2019) CRISPR-cas system: Biological function in microbes and its use to treat antimicrobial-resistant pathogens (Annals of Clinical Microbiology and Antimicrobials doi.org/10.1186/s12941-019-0317-x).
• Qasim Ali, Neil D. Sargison, Umer Chaudhry (2018) Emergence and the spread of the F200Y benzimidazole resistance mutation in Haemonchus contortus and Haemonchus placei from buffalo and cattle (Veterinary Parasitology doi.org/10.1016/j.vetpar.2018.12.001).
• Qasim Ali, Neil D. Sargison, Umer Chaudhry (2018) Population genetics of benzimidazole resistant Haemonchus contortus and Haemonchus placei from buffalo and cattle: implications for the emergence and spread of resistance mutations (Parasitology Research doi.org/10.1007/s00436-018-6055-8).
• Qasim Ali, Imran Rashid, Kashif Shahzad, Kamran Ashraf, Neil Sargison, Umer Chaudhry (2018) First genetic evidence for the presence of the rumen fluke Paramphistomum epiclitum in Pakistan (Parasitology International doi.org/10.1016/j.parint.2018.05.005).
• Ayaz Shaukat, Neil D. Sargison, Umer Chaudhry (2018) Selective sweep and phylogenetic models for the emergence and spread of pyrimethamine resistance mutations in Plasmodium vivax (Infection, Genetics and Evolution doi.org/10.1016/j.meegid.2018.12.032).
• Neil Sargison, Alex Chambers, Umer Chaudhry (2018) Molecular confirmation of Hymenolepis hibernia in field mice (Apodemus sylvaticus) from St Kilda has potential to resolve a host-parasite relationship (International Journal for Parasitology: Parasites & Wildlife doi.org/10.1016/j.ijppaw.2018.09.007).
• Shoaib Ashraf, Umer Chaudhry, Xin Zhao (2018) In vitro activity of ivermectin against Staphylococcus aureus clinical isolates (Antimicrobial Resistance & Inf Control doi.org/10.1186/s13756-018-0314-4).
• Stephen R. Doyle, Roz Laing, Collette Britton, Umer Chaudhry, John S. Gilleard, Eileen Devaney, James A. Cotton, Neil D. Sargison (2017) A genome resequencing based genetic map reveals the recombination landscape of an outbred parasitic nematode in the presence of polyploidy and polyandry (Genome Biology & Evolution doi.org/10.1093/gbe/evx269).
• Umer Chaudhry, Bradley van Paridon, Neil Sargison (2017) Morphological and molecular identification of Explanatum explanatum in domestic water buffalo in Pakistan (Veterinary Parasitology-Regional Studies and Reports doi.org/10.1016/j.vprsr.2017.02.002).
• Gillian Mitchell, Grace Cuthill, Ruth Zadoks, Umer Chaudhry, Philip Skuce, Neil Sargison (2017) Evaluation of molecular methods for the field study of the natural history and changing epidemiology of Dicrocoelium dendriticum (Veterinary Parasitology doi.org/10.1016/j.vetpar.2017.01.010).
• Muhammad Zubair Shabbir, Umer Chaudhry, Waseem Yaqub, Imran Rashid, Muhammad Hassan Saleem, and Muhammad Munir (2017) Genetic characterization and phylogenomics of canine parvovirus from dogs in Pakistan (Acta Virologica doi.org/10.4149/av_2017_02_175).
• Umer Chaudhry, E. M. Redman, John S. Gilleard (2016) Microsatellite marker analysis of Haemonchus contortus populations from Pakistan suggests that frequent benzimidazole drug treatment does not result in a reduction of overall genetic diversity (Parasites and Vectors doi.org/10.1186/s13071-016-1624-0).
• Umer Chaudhry, Bradley van Paridon, John Gilleard (2016) Molecular evidence that Fasciola gigantica is the predominant Fasciola species infecting ruminants in Pakistan (Journal of Helminthology doi.org/10.1017/S0022149X15000176).
• M. Zubair Shabbir, Umer Chaudhry, Muhammad Munir (2016) Molecular characterization of infectious bursal disease viruses from Pakistan (Archives of Virology doi.org/10.1007/s00705-016-2869-9).
• Umer Chaudhry, E. M. Redman, John Gilleard (2015) Genetic evidence for the spread of a benzimidazole resistance mutation across Southern India from a single origin in the parasitic nematode Haemonchus contortus (International Journal for Parasitology doi.org/10.1016/j.ijpara.2015.04.007).
• Umer Chaudhry, E. M. Redman, S. Gilleard (2015) Genetic evidence for hybridization between Haemonchus contortus and Haemonchus placei in natural field populations and its implications for interspecies transmission of anthelmintic resistance (International Journal for Parasitology doi.org/10.1016/j.ijpara.2014.09.002).
• Qasim Ali, Umer Chaudhry (2015) Genetic variation in the rDNA ITS-2 sequence of Haemonchus placei from cattle host (Journal of Infection and Molecular Biology doi.org/10.14737/journal.jimb/2015/3.1.13.18).
• Umer Chaudhry, John Gilleard (2014) The presence of benzimidazole resistance mutations in Haemonchus placei in US cattle (Veterinary Parasitology doi.org/10.1016/j.vetpar.2014.05.025).
• Umer Chaudhry, Asad Ali, Shoaib Ashraf, Muhammad Tanveer Khan, Maaz Nadeem, Kamran Ashraf (2014) Seroprevalence of Toxoplasma gondii Infection in Camels in and around Bahawalpur Region of Pakistan (Journal of Infection and Mol Biology doi.org/10.14737/jimb.2307-5465/2.1.16.18).
• Tanveer, K., Umer Chaudhry (2011) Prevalence and chemo-therapeutical investigations of gastrointestinal nematodes in domestic pigeons collecting from Lahore, Pakistan (Trop Biomed doi.org/28(1):102-10).
• Shoaib Ashraf, Awais Omer, Umer Chaudhry, and Muhammad Muddassir Ali (2009) Efficacy of florfenicol against Heamorrhagic Septiceamia in buffalo calves (Pakistan Journal of Zoology).