C. O’Brien

3.2k total citations · 1 hit paper
69 papers, 2.1k citations indexed

About

C. O’Brien is a scholar working on Epidemiology, Infectious Diseases and Small Animals. According to data from OpenAlex, C. O’Brien has authored 69 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Epidemiology, 17 papers in Infectious Diseases and 17 papers in Small Animals. Recurrent topics in C. O’Brien's work include Mycobacterium research and diagnosis (15 papers), Infectious Diseases and Mycology (15 papers) and Fungal Infections and Studies (8 papers). C. O’Brien is often cited by papers focused on Mycobacterium research and diagnosis (15 papers), Infectious Diseases and Mycology (15 papers) and Fungal Infections and Studies (8 papers). C. O’Brien collaborates with scholars based in Australia, United States and United Kingdom. C. O’Brien's co-authors include Richard Malík, Janet Fyfe, Mark Krockenberger, Janice K. Albrecht, Ira M. Jacobson, Carlton Meschievitz, Richard E. Sampliner, Mary C. Kuhns, Jules L. Dienstag and Robert P. Perrillo and has published in prestigious journals such as New England Journal of Medicine, Journal of Allergy and Clinical Immunology and Journal of Clinical Microbiology.

In The Last Decade

C. O’Brien

65 papers receiving 2.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

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

1990 664 citations Robert P. Perrillo, E. Schiff et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
C. O’Brien Australia	26	1.4k	565	535	486	298	69	2.1k
Annemiek A. van der Eijk Netherlands	28	974 0.7×	1.4k 2.5×	1.3k 2.4×	56 0.1×	24 0.1×	95	2.8k
Jurjen Schirm Netherlands	28	1.7k 1.2×	126 0.2×	486 0.9×	60 0.1×	41 0.1×	58	2.3k
R. Conklin United States	18	305 0.2×	68 0.1×	376 0.7×	139 0.3×	100 0.3×	28	1.1k
B R Jones United Kingdom	25	1.2k 0.8×	25 0.0×	385 0.7×	39 0.1×	612 2.1×	74	2.6k
Hans‐Iko Huppertz Germany	26	215 0.2×	155 0.3×	894 1.7×	62 0.1×	28 0.1×	111	2.1k
A R Noriega Spain	19	966 0.7×	52 0.1×	630 1.2×	74 0.2×	33 0.1×	47	1.5k
Andreas Plettenberg Germany	20	488 0.3×	65 0.1×	799 1.5×	75 0.2×	12 0.0×	85	1.9k
Joseph J. Mattapallil United States	29	1.1k 0.8×	46 0.1×	1.1k 2.1×	45 0.1×	25 0.1×	72	3.9k
Franz von Lichtenberg United States	29	285 0.2×	210 0.4×	332 0.6×	613 1.3×	12 0.0×	91	2.2k
M Just Switzerland	24	1.0k 0.7×	197 0.3×	356 0.7×	18 0.0×	14 0.0×	86	1.7k

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-authorship network of co-authors of C. O’Brien

This figure shows the co-authorship network connecting the top 25 collaborators of C. O’Brien. A scholar is included among the top collaborators of C. O’Brien based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with C. O’Brien. C. O’Brien is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Kim, Dongmin, et al.. (2025). A mycelium-based carbon dioxide source for trapping vector mosquitoes. Journal of Medical Entomology. 62(5). 1338–1343.

Carson, Connor, Caroline J. Lavender, Kathrine A. Handasyde, et al.. (2014). Potential Wildlife Sentinels for Monitoring the Endemic Spread of Human Buruli Ulcer in South-East Australia. PLoS neglected tropical diseases. 8(1). e2668–e2668. 40 indexed citations

Malík, Richard, et al.. (2013). Ulcerated and nonulcerated nontuberculous cutaneous mycobacterial granulomas in cats and dogs. Veterinary Dermatology. 24(1). 146–146. 43 indexed citations

O’Brien, C., et al.. (2011). Localised Mycobacterium ulcerans infection in four dogs. Australian Veterinary Journal. 89(12). 506–510. 30 indexed citations

Barrs, Vanessa R., Catriona Halliday, Bethany Wilson, et al.. (2011). Sinonasal and sino-orbital aspergillosis in 23 cats: Aetiology, clinicopathological features and treatment outcomes. The Veterinary Journal. 191(1). 58–64. 52 indexed citations

Lingard, Amy E, C. O’Brien, Vanessa R. Barrs, et al.. (2010). Concurrent feline infectious peritonitis and toxoplasmosis in three cases.. 40(1). 9–16. 1 indexed citations

Fyfe, Janet, Caroline J. Lavender, Kathrine A. Handasyde, et al.. (2010). A Major Role for Mammals in the Ecology of Mycobacterium ulcerans. PLoS neglected tropical diseases. 4(8). e791–e791. 159 indexed citations

Lingard, Amy E, et al.. (2009). Calcinosis cutis in a young cat with acute renal failure.. 39(4). 147–151. 1 indexed citations

O’Brien, C., et al.. (2008). Feline diarrhoea associated withTritrichomonascf.foetusandGiardiaco‐infection in an Australian cattery. Australian Veterinary Journal. 86(11). 440–443. 31 indexed citations

10.

O’Brien, C., et al.. (2006). Long‐term outcome of therapy for 59 cats and 11 dogs with cryptococcosis. Australian Veterinary Journal. 84(11). 384–392. 56 indexed citations

11.

Malík, Richard, Mark Krockenberger, C. O’Brien, et al.. (2006). Nocardiainfections in cats: a retrospective multi‐institutional study of 17 cases. Australian Veterinary Journal. 84(7). 235–245. 37 indexed citations

12.

O’Brien, C., Mark Krockenberger, D. I. Wigney, Patricia Martín, & Richard Malík. (2004). Retrospective study of feline and canine cryptococcosis in Australia from 1981 to 2001: 195 cases. Medical Mycology. 42(5). 449–460. 95 indexed citations

13.

Malík, Richard, Mark Krockenberger, GM CROSS, et al.. (2003). Avian cryptococcosis. Medical Mycology. 41(2). 115–124. 33 indexed citations

14.

Malík, Richard, Deborah S. Finlaison, Mark Krockenberger, et al.. (2002). Cryptococcosis in ferrets: a diverse spectrum of clinical disease. Australian Veterinary Journal. 80(12). 749–755. 35 indexed citations

15.

O’Brien, C., et al.. (2001). Calcinosis circumscripta following an injection of proligestone in a Burmese cat. Australian Veterinary Journal. 79(3). 187–189. 9 indexed citations

16.

Habib, Usman, et al.. (1997). Long-term results and complications after trabeculectomy with a single per-operative application of 5-fluorouracil. Eye. 11(5). 663–671. 28 indexed citations

17.

Singh, Jaswinder, et al.. (1995). Success rate and complications of intraoperative 0.2 mg/ml Mitomycin C in trabeculectomy surgery. Eye. 9(4). 460–466. 71 indexed citations

18.

O’Brien, C. & David Clark. (1994). Ocular biometry in pre-term infants without retinopathy of prematurity. Eye. 8(6). 662–665. 26 indexed citations

19.

Butcher, Jeremy & C. O’Brien. (1991). The reproducibility of biometry and keratometry measurements. Eye. 5(6). 708–711. 36 indexed citations

20.

Perrillo, Robert P., E. Schiff, Gerald L. Davis, et al.. (1990). 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. 323(5). 295–301. 664 indexed citations breakdown →

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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