C. O’Brien

3.2k citations

69 papers · 2.1k indexed · 1 hit paper · h-index 26

Impact in

Hepatology top 1%
- Hepatitis C virus research
Small Animals top 0.5%
- Infectious Diseases and Mycology

Papers in ⓘ

Epidemiology 34
- Mycobacterium research and diagnosis 15
- Fungal Infections and Studies 8
- Nail Diseases and Treatments 5
Infectious Diseases 17
- Tuberculosis Research and Epidemiology 6
- Leprosy Research and Treatment 5

Co-authors: Richard Malík (25 shared papers)Janet Fyfe (11 shared papers)Mark Krockenberger (11 shared papers)Carlo H. Tamburro (1 shared paper)Carlton Meschievitz (1 shared paper)Robert P. Perrillo (1 shared paper)Richard E. Sampliner (1 shared paper)Mary C. Kuhns (1 shared paper)
Journals: Journal of Feline Medicine and Surgery (15 papers)Australian Veterinary Journal (10 papers)Journal of Allergy and Clinical Immunology (6 papers)Eye (5 papers)Medical Mycology (3 papers)
Partner nations: Australia United States United Kingdom

In The Last Decade

C. O’Brien

65 papers receiving 2.0k citations

Hit Papers

align trajectories log scale

A Randomized, Controlled Trial of Interferon Alfa-2b Alone and after Prednisone Withdrawal for the Treatment of Chronic Hepatitis B 1990 · 664 citations

Peers

Countries citing papers authored by C. O’Brien

Since Specialization

Citations

This map shows the geographic impact of C. O’Brien's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by C. O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. O’Brien more than expected).

Fields of papers citing papers by C. O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. O’Brien. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by C. O’Brien. The network helps show where C. O’Brien may publish in the future.

Co-authors

The 25 scholars most cited alongside C. O’Brien, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with C. O’Brien Line = papers co-authored together C. O’Brien links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 69 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	A Randomized, Controlled Trial of Interferon Alfa-2b Alone and after Prednisone Withdrawal for the Treatment of Chronic Hepatitis B New England Journal of Medicine ·Robert P. Perrillo, E. Schiff, Gerald L. Davis, Henry C. Bodenheimer, Karen L. Lindsay, John A. Payne, Jules L. Dienstag, C. O’Brien, Carlo H. Tamburro, Ira M. Jacobson, Richard E. Sampliner, David Feit, Jay H. Lefkowitch, Mary C. Kuhns, Carlton Meschievitz, Bharati Sanghvi, Janice K. Albrecht, Alexandra L. Gibas Hit paper breakdown →	1990	664
2	A Major Role for Mammals in the Ecology of Mycobacterium ulcerans PLoS neglected tropical diseases ·Janet Fyfe, Caroline J. Lavender, Kathrine A. Handasyde, Alistair R. Legione, C. O’Brien, Timothy P. Stinear, Sacha J. Pidot, Torsten Seemann, M. Eric Benbow, John R. Wallace, Christina McCowan, Paul D. R. Johnson	2010	159
3	Pulsatile ocular blood flow investigation in asymmetric normal tension glaucoma and normal subjects British Journal of Ophthalmology ·Luigi Fontana, D Poinoosawmy, Catey Bunce, C. O’Brien, R A Hitchings	1998	97
4	Retrospective study of feline and canine cryptococcosis in Australia from 1981 to 2001: 195 cases Medical Mycology ·C. O’Brien, Mark Krockenberger, D. I. Wigney, Patricia Martín, Richard Malík	2004	95
5	Success rate and complications of intraoperative 0.2 mg/ml Mitomycin C in trabeculectomy surgery Eye ·Jaswinder Singh, C. O’Brien, Hector Bryson Chawla	1995	71
6	Long‐term outcome of therapy for 59 cats and 11 dogs with cryptococcosis Australian Veterinary Journal ·C. O’Brien, Mark Krockenberger, (unknown), DI WIGNEY, Richard Malík	2006	56
7	Axial length biometry in infants with retinopathy of prematurity Eye ·David Laws, R Haslett, Deborah Ashby, C. O’Brien, David Clark	1994	54
8	Sinonasal and sino-orbital aspergillosis in 23 cats: Aetiology, clinicopathological features and treatment outcomes The Veterinary Journal ·Vanessa R. Barrs, Catriona Halliday, (unknown), Bethany Wilson, Mark Krockenberger, Marcus Gunew, SL Bennett, E. Koehlmeyer, Amanda L. Thompson, R. A. Fliegner, Ailsa D. Hocking, Sue Sleiman, C. O’Brien, Julia A. Beatty	2011	52
9	Localised Mycobacterium ulcerans infection in a cat in Australia Journal of Feline Medicine and Surgery ·Lisa Elsner, Julie Wayne, C. O’Brien, Christina McCowan, Richard Malík, John Hayman, Maria Globan, Caroline J. Lavender, Janet Fyfe	2008	46
10	Clinical, Microbiological and Pathological Findings of Mycobacterium ulcerans Infection in Three Australian Possum Species PLoS neglected tropical diseases ·C. O’Brien, Kathrine A. Handasyde, Jennifer Hibble, Caroline J. Lavender, Alistair R. Legione, Christina McCowan, Maria Globan, Anthony Mitchell, Helen McCracken, Paul D. R. Johnson, Janet Fyfe	2014	43
11	Ulcerated and nonulcerated nontuberculous cutaneous mycobacterial granulomas in cats and dogs Veterinary Dermatology ·Richard Malík, Bronwyn Smits, George Reppas, Caroline Laprie, C. O’Brien, Janet Fyfe	2013	43
12	Potential Wildlife Sentinels for Monitoring the Endemic Spread of Human Buruli Ulcer in South-East Australia PLoS neglected tropical diseases ·Connor Carson, Caroline J. Lavender, Kathrine A. Handasyde, C. O’Brien, C. N. Hewitt, Paul D. R. Johnson, Janet Fyfe	2014	40
13	Infections and some other conditions affecting the skin and subcutis of the naso-ocular region of cats—Clinical experience 1987–2003 Journal of Feline Medicine and Surgery ·Richard Malík, Linda J. Vogelnest, C. O’Brien, Joanna White, Christine Hawke, D. I. Wigney, Patricia Martín, Jacqueline M. Norris	2004	38
14	Nocardiainfections in cats: a retrospective multi‐institutional study of 17 cases Australian Veterinary Journal ·Richard Malík, Mark Krockenberger, C. O’Brien, JD WHITE, Derek Foster, PLC TISDALL, Marcus Gunew, PD CARR, Leonard S. Bodell, Christina McCowan, J HOWE, C. L. Oakley, C. J. Griffin, DI WIGNEY, (unknown), Jacqueline M. Norris, Glenn E. Hunt, DH MITCHELL, Christopher Gilpin	2006	37
15	The reproducibility of biometry and keratometry measurements Eye ·Jeremy Butcher, C. O’Brien	1991	36
16	Cryptococcosis in ferrets: a diverse spectrum of clinical disease Australian Veterinary Journal ·Richard Malík, B ALDERTON, Deborah S. Finlaison, Mark Krockenberger, Haydar Karaoglu, Wieland Meyer, Patricia Martín, MP FRANCE, Jodi L. McGill, SJ LESTER, C. O’Brien, DN LOVE	2002	35
17	Observed occurrence of Tritrichomonas foetus and other enteric parasites in Australian cattery and shelter cats⋆ Journal of Feline Medicine and Surgery ·Sally A. Bissett, Maria L. Stone, Richard Malík, Jacqueline M. Norris, C. O’Brien, Caroline Mansfield, Julia M. Nicholls, Alison Griffin, Jody L. Gookin	2009	35
18	Avian cryptococcosis Medical Mycology ·Richard Malík, Mark Krockenberger, GM CROSS, Robert Doneley, D. N. Madill, D. Black, P. Mcwhirter, A. Rozenwax, Karrie Rose, M.R. Alley, David Forshaw, I. Russell-Brown, Anthony Johnstone, (unknown), C. O’Brien, Daria N. Love	2003	33
19	Fecundity of Cryptosporidium parvum is correlated with intracellular levels of the viral symbiont CPV International Journal for Parasitology ·Mark C. Jenkins, Jim Higgins, Juan E. Abrahante, Kalmia E. Kniel, C. O’Brien, James M. Trout, Cheryl A. Lancto, Mitchell S. Abrahamsen, R. Fayer	2007	33
20	Molecular Characterization of a Novel Fastidious Mycobacterium Causing Lepromatous Lesions of the Skin, Subcutis, Cornea, and Conjunctiva of Cats Living in Victoria, Australia Journal of Clinical Microbiology ·Janet Fyfe, Christina McCowan, C. O’Brien, Maria Globan, Chris Birch, Peter Revill, Vanessa R. Barrs, Julie Wayne, M S Hughes, Steven A. Holloway, Richard Malík	2007	33

About C. O’Brien

C. O’Brien is a scholar working on Epidemiology, Infectious Diseases, Small Animals, Pulmonary and Respiratory Medicine and Radiology, Nuclear Medicine and Imaging, having authored 69 papers that have together received 2.1k indexed citations. Recurring topics across this work include Mycobacterium research and diagnosis (15 papers), Infectious Diseases and Mycology (15 papers), Fungal Infections and Studies (8 papers), Glaucoma and retinal disorders (6 papers), Tuberculosis Research and Epidemiology (6 papers), Inhalation and Respiratory Drug Delivery (6 papers), Nail Diseases and Treatments (5 papers) and Leprosy Research and Treatment (5 papers). The work is most often cited by research in Hepatology (565 citations), Small Animals (486 citations), Microbiology (43 citations), Epidemiology (1.4k citations) and Ophthalmology (298 citations). C. O’Brien has collaborated with scholars based in Australia, United States and United Kingdom. Frequent co-authors include Richard Malík, Janet Fyfe, Mark Krockenberger, Carlo H. Tamburro, Carlton Meschievitz, Robert P. Perrillo, Richard E. Sampliner, Mary C. Kuhns, Henry C. Bodenheimer and Karen L. Lindsay. Their work appears in journals such as Journal of Feline Medicine and Surgery, Australian Veterinary Journal, Journal of Allergy and Clinical Immunology, Eye and Medical Mycology.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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