World's Best Scientists 2026 revealed!
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Animal Science and Veterinary
Australia
2026

D-Index & Metrics

Animal Science and Veterinary

D-Index
73
Citations
20170
World Ranking
128
National Ranking
8

Microbiology

D-Index
72
Citations
19748
World Ranking
1740
National Ranking
54

Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in Australia Leader Award
  • 2025 - Research.com Animal Science and Veterinary in Australia Leader Award
  • 2023 - Research.com Animal Science and Veterinary in Australia Leader Award
  • 2022 - Research.com Animal Science and Veterinary in Australia Leader Award

Overview

What is she best known for?

The fields of study she is best known for:

  • Gene
  • Ecology
  • Genetics

Una Ryan spends much of her time researching Cryptosporidium, Genotype, Cryptosporidium parvum, Microbiology and Virology. The study incorporates disciplines such as Zoology, Protozoa and Locus in addition to Cryptosporidium. Her study focuses on the intersection of Genotype and fields such as Giardia with connections in the field of Epidemiology, Environmental health, Transmission, Public health and Giardia species.

Her study explores the link between Cryptosporidium parvum and topics such as Outbreak that cross with problems in Cryptosporidium bovis and Rural population. Una Ryan interconnects Host and Cell free in the investigation of issues within Microbiology. Her research in Virology intersects with topics in 18S ribosomal RNA and Protozoan parasite.

Her most cited work include:

  • Cryptosporidium Taxonomy: Recent Advances and Implications for Public Health (750 citations)
  • Molecular epidemiology of giardiasis (358 citations)
  • Cryptosporidium species in humans and animals: current understanding and research needs (336 citations)

What are the main themes of her work throughout her whole career to date?

Her primary areas of study are Cryptosporidium, Zoology, 18S ribosomal RNA, Genotype and Microbiology. Her Cryptosporidium research includes themes of Veterinary medicine, Giardia and Cryptosporidium parvum, Virology. Her Cryptosporidium parvum research is multidisciplinary, incorporating perspectives in Outbreak and Cryptosporidium hominis.

The concepts of her Zoology study are interwoven with issues in Isospora, Ecology, Phylogenetic tree, Theileria and Eimeriidae. Una Ryan usually deals with 18S ribosomal RNA and limits it to topics linked to Locus and Molecular phylogenetics. Her study in Genotype is interdisciplinary in nature, drawing from both Sequence analysis and Genetic diversity.

She most often published in these fields:

  • Cryptosporidium (42.95%)
  • Zoology (30.72%)
  • 18S ribosomal RNA (23.82%)

What were the highlights of her more recent work (between 2017-2021)?

  • Zoology (30.72%)
  • Cryptosporidium (42.95%)
  • 18S ribosomal RNA (23.82%)

In recent papers she was focusing on the following fields of study:

Una Ryan mostly deals with Zoology, Cryptosporidium, 18S ribosomal RNA, Veterinary medicine and Genotype. Her Zoology research is multidisciplinary, incorporating elements of Isospora, Trypanosoma, Eimeriidae and Phylogenetic tree. Her studies in Cryptosporidium integrate themes in fields like Virology, Medical microbiology, Cryptosporidium parvum, Zoonosis and Outbreak.

Her studies deal with areas such as DNA sequencing, Sequence analysis, Locus and Canis as well as 18S ribosomal RNA. Una Ryan combines subjects such as Faecal consistency, Feces and Livestock with her study of Veterinary medicine. Her Genotype study integrates concerns from other disciplines, such as Structural variation and Podargus.

Between 2017 and 2021, her most popular works were:

  • Genetic Diversity and Population Structure of Cryptosporidium (153 citations)
  • Recent insights into the tick microbiome gained through next-generation sequencing (67 citations)
  • Giardia: An Under-Reported Foodborne Parasite (57 citations)

In her most recent research, the most cited papers focused on:

  • Gene
  • Ecology
  • Genetics

Una Ryan mainly focuses on Cryptosporidium, Genotype, Zoology, Livestock and 18S ribosomal RNA. Her work deals with themes such as Entamoeba, Cryptosporidium parvum and Outbreak, which intersect with Cryptosporidium. Her Genotype research is multidisciplinary, relying on both Structural variation and Population genomics.

She has included themes like Range, Zoonosis, Transmission, Molecular epidemiology and Phylogenetics in her Zoology study. Her work in Livestock addresses issues such as Veterinary medicine, which are connected to fields such as Paramphistomum, Moniezia and Trichuris. Una Ryan has researched 18S ribosomal RNA in several fields, including Cryptosporidium hominis, Astronotus, Genetic distance, Sequence analysis and DNA sequencing.

Best Publications

  • Cryptosporidium Taxonomy: Recent Advances and Implications for Public Health

    Lihua Xiao;Ronald Fayer;Una Ryan;Steve J. Upton

  • Cryptosporidium species in humans and animals: current understanding and research needs

    Una Ryan;Ronald Fayer;Lihua Xiao

  • Zoonotic potential of Giardia.

    Una Ryan;Simone M. Cacciò

  • Molecular epidemiology of giardiasis

    Simone M. Cacciò;Una Ryan

  • Genetic Diversity and Population Structure of Cryptosporidium

    Yaoyu Feng;Una M. Ryan;Lihua Xiao

  • Identification of novel Cryptosporidium genotypes from the Czech Republic

    Una Ryan;Lihua Xiao;Carolyn Read;Ling Zhou

  • Cryptosporidiosis: an update in molecular epidemiology.

    Lihua Xiao;Una M Ryan

  • Host adaptation and host-parasite co-evolution in Cryptosporidium: implications for taxonomy and public health.

    Lihua Xiao;Irshad M Sulaiman;Una M Ryan;Ling Zhou

  • Taxonomy and molecular epidemiology of Cryptosporidium and Giardia - a 50 year perspective (1971-2021).

    Una M. Ryan;Yaoyu Feng;Ronald Fayer;Lihua Xiao

  • Cryptosporidium and Giardia in Africa: current and future challenges

    Sylvia Afriyie Squire;Sylvia Afriyie Squire;Una Ryan

  • Sheep May Not Be an Important Zoonotic Reservoir for Cryptosporidium and Giardia Parasites

    Una M. Ryan;Caroline Bath;Ian Robertson;Carolyn Read

  • Cryptosporidium in humans and animals—a one health approach to prophylaxis

    Una Ryan;Alireza Zahedi;Andrea Paparini

  • Subtyping Cryptosporidium ubiquitum, a Zoonotic Pathogen Emerging in Humans

    Na Li;Lihua Xiao;Keri Alderisio;Kristin Elwin

  • New developments in Cryptosporidium research

    Una Ryan;Nawal Hijjawi

  • An Update on Zoonotic Cryptosporidium Species and Genotypes in Humans.

    Una Ryan;Alireza Zahedi;Yaoyu Feng;Lihua Xiao

  • Giardia: An Under-Reported Foodborne Parasite

    Una Ryan;Nawal Hijjawi;Yaoyu Feng;Lihua Xiao

  • Cryptosporidium suis n. sp. (Apicomplexa: Cryptosporidiidae) in pigs (Sus scrofa).

    U. M. Ryan;P. Monis;H. L. Enemark;I. Sulaiman

  • Identification of novel Cryptosporidium genotypes from avian hosts.

    Josephine Ng;Ivan Pavlasek;Una Ryan

  • Recent insights into the tick microbiome gained through next-generation sequencing

    Telleasha L. Greay;Alexander W. Gofton;Andrea Paparini;Una M. Ryan

  • Comparison of next-generation droplet digital PCR (ddPCR) with quantitative PCR (qPCR) for enumeration of Cryptosporidium oocysts in faecal samples.

    Rongchang Yang;Andrea Paparini;Paul Monis;Una Ryan

  • PCR-RFLP for the detection and differentiation of the canine piroplasm species and its use with filter paper-based technologies

    R. Jefferies;U.M. Ryan;P.J. Irwin

  • Public health significance of zoonotic Cryptosporidium species in wildlife: Critical insights into better drinking water management.

    Alireza Zahedi;Andrea Paparini;Fuchun Jian;Ian Robertson

  • Cryptosporidium in birds, fish and amphibians

    Una Ryan

  • Cryptosporidiosis: an update in molecular epidemiology (Review)

    L. Xiao;U.M. Ryan

Frequent Co-Authors

Rongchang Yang
Rongchang Yang Murdoch University
Peter J. Irwin
Peter J. Irwin Murdoch University
Ian D. Robertson
Ian D. Robertson Murdoch University
Lihua Xiao
Lihua Xiao South China Agricultural University
Caroline Jacobson
Caroline Jacobson Murdoch University
Paul Monis
Paul Monis University of South Australia
Graham E. Gardner
Graham E. Gardner Murdoch University
Alan J. Lymbery
Alan J. Lymbery Murdoch University
Andrew S. Ball
Andrew S. Ball RMIT University
R.C.A. Thompson
R.C.A. Thompson Murdoch University

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