Timothy T. O’Bryan

2.1k total citations
20 papers, 1.7k citations indexed

About

Timothy T. O’Bryan is a scholar working on Endocrinology, Molecular Biology and Epidemiology. According to data from OpenAlex, Timothy T. O’Bryan has authored 20 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Endocrinology, 6 papers in Molecular Biology and 6 papers in Epidemiology. Recurrent topics in Timothy T. O’Bryan's work include Escherichia coli research studies (19 papers), Urinary Tract Infections Management (6 papers) and Antibiotic Resistance in Bacteria (5 papers). Timothy T. O’Bryan is often cited by papers focused on Escherichia coli research studies (19 papers), Urinary Tract Infections Management (6 papers) and Antibiotic Resistance in Bacteria (5 papers). Timothy T. O’Bryan collaborates with scholars based in United States, France and Denmark. Timothy T. O’Bryan's co-authors include James R. Johnson, Michael A. Kuskowski, James R. Johnson, Amee R. Manges, Kathleen E. Fullerton, Betsy Foxman, S.R. Tatini, Kirk Smith, Parissa Delavari and Joel N. Maslow and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Clinical Infectious Diseases.

In The Last Decade

Timothy T. O’Bryan

20 papers receiving 1.6k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Timothy T. O’Bryan United States	19	1.3k	768	539	471	285	20	1.7k
Abby Gajewski United States	10	980 0.8×	738 1.0×	361 0.7×	315 0.7×	193 0.7×	10	1.2k
Parissa Delavari United States	12	775 0.6×	401 0.5×	248 0.5×	296 0.6×	188 0.7×	12	1.0k
Danilo Gomes Moriel Australia	22	831 0.6×	711 0.9×	466 0.9×	165 0.4×	545 1.9×	41	1.7k
Forough L. Nowrouzian Sweden	18	564 0.4×	335 0.4×	202 0.4×	259 0.5×	481 1.7×	37	1.3k
Izabela Kern-Zdanowicz Poland	15	458 0.4×	995 1.3×	319 0.6×	153 0.3×	291 1.0×	31	1.4k
Rafael Vignoli Uruguay	19	433 0.3×	630 0.8×	244 0.5×	231 0.5×	199 0.7×	59	1.0k
Zeqing Wei China	21	750 0.6×	1.6k 2.1×	420 0.8×	120 0.3×	497 1.7×	32	2.0k
Lotte Jakobsen Denmark	18	450 0.3×	513 0.7×	184 0.3×	235 0.5×	155 0.5×	28	948
T Jimenez de Anta Spain	9	412 0.3×	770 1.0×	183 0.3×	159 0.3×	264 0.9×	10	968
Hazel M. Aucken United Kingdom	18	454 0.4×	701 0.9×	262 0.5×	99 0.2×	442 1.6×	30	1.3k

Countries citing papers authored by Timothy T. O’Bryan

Since Specialization

Citations

This map shows the geographic impact of Timothy T. O’Bryan'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 Timothy T. O’Bryan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy T. O’Bryan more than expected).

Fields of papers citing papers by Timothy T. O’Bryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Timothy T. O’Bryan. 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 Timothy T. O’Bryan. The network helps show where Timothy T. O’Bryan may publish in the future.

Co-authorship network of co-authors of Timothy T. O’Bryan

This figure shows the co-authorship network connecting the top 25 collaborators of Timothy T. O’Bryan. A scholar is included among the top collaborators of Timothy T. O’Bryan 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 Timothy T. O’Bryan. Timothy T. O’Bryan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Johnson, James R., Parissa Delavari, Timothy T. O’Bryan, Kirk Smith, & S.R. Tatini. (2005). Contamination of Retail Foods, Particularly Turkey, from Community Markets (Minnesota, 1999–2000) with Antimicrobial-Resistant and Extraintestinal Pathogenic Escherichia coli. Foodborne Pathogens and Disease. 2(1). 38–49. 81 indexed citations

Johnson, James R., Flemming Scheutz, Peter Ulleryd, et al.. (2005). Host-Pathogen Relationships among Escherichia coli Isolates Recovered from Men with Febrile Urinary Tract Infection. Clinical Infectious Diseases. 40(6). 813–822. 29 indexed citations

Johnson, James R., Michael A. Kuskowski, Kirk Smith, Timothy T. O’Bryan, & S.R. Tatini. (2005). Antimicrobial‐Resistant and Extraintestinal PathogenicEscherichia coliin Retail Foods. The Journal of Infectious Diseases. 191(7). 1040–1049. 195 indexed citations

Johnson, James R., Flemming Scheutz, Peter Ulleryd, et al.. (2005). Phylogenetic and Pathotypic Comparison of Concurrent Urine and RectalEscherichia coliIsolates from Men with Febrile Urinary Tract Infection. Journal of Clinical Microbiology. 43(8). 3895–3900. 49 indexed citations

Johnson, James R. & Timothy T. O’Bryan. (2004). Detection of theEscherichia coliGroup 2 Polysaccharide Capsule Synthesis GenekpsMby a Rapid and Specific PCR-Based Assay. Journal of Clinical Microbiology. 42(4). 1773–1776. 30 indexed citations

Johnson, James R., Michael A. Kuskowski, Timothy T. O’Bryan, Raul Colodner, & Raul Raz. (2004). Virulence Genotype and Phylogenetic Origin in Relation to Antibiotic Resistance Profile among Escherichia coli Urine Sample Isolates from Israeli Women with Acute Uncomplicated Cystitis. Antimicrobial Agents and Chemotherapy. 49(1). 26–31. 73 indexed citations

Johnson, James R., Michael A. Kuskowski, Timothy T. O’Bryan, & Joel N. Maslow. (2002). Epidemiological Correlates of Virulence Genotype and Phylogenetic Background amongEscherichia coliBlood Isolates from Adults with Diverse‐Source Bacteremia. The Journal of Infectious Diseases. 185(10). 1439–1447. 82 indexed citations

Johnson, James R., Amee R. Manges, Timothy T. O’Bryan, & Lee W. Riley. (2002). A disseminated multidrug-resistant clonal group of uropathogenic Escherichia coli in pyelonephritis. The Lancet. 359(9325). 2249–2251. 92 indexed citations

Johnson, James R., Éric Oswald, Timothy T. O’Bryan, Michael A. Kuskowski, & Lodewijk Spanjaard. (2002). Phylogenetic Distribution of Virulence‐Associated Genes amongEscherichia coliIsolates Associated with Neonatal Bacterial Meningitis in The Netherlands. The Journal of Infectious Diseases. 185(6). 774–784. 133 indexed citations

10.

Johnson, James R., et al.. (2002). Novel Molecular Variants of Allele I of the Escherichia coli P Fimbrial Adhesin Gene papG. Infection and Immunity. 70(5). 2739–2739. 1 indexed citations

11.

Johnson, James R., Adam L. Stell, Timothy T. O’Bryan, et al.. (2002). Global Molecular Epidemiology of the O15:K52:H1 Extraintestinal Pathogenic Escherichia coli Clonal Group: Evidence of Distribution beyond Europe. Journal of Clinical Microbiology. 40(6). 1913–1923. 49 indexed citations

12.

Manges, Amee R., et al.. (2001). Widespread Distribution of Urinary Tract Infections Caused by a Multidrug-ResistantEscherichia coliClonal Group. New England Journal of Medicine. 345(14). 1007–1013. 393 indexed citations

13.

Johnson, James R., Timothy T. O’Bryan, Parissa Delavari, et al.. (2001). Clonal Relationships and Extended Virulence Genotypes amongEscherichia coliIsolates from Women with a First or Recurrent Episode of Cystitis. The Journal of Infectious Diseases. 183(10). 1508–1517. 69 indexed citations

14.

Johnson, James R., Parissa Delavari, & Timothy T. O’Bryan. (2001). Escherichia coliO18:K1:H7 Isolates from Patients with Acute Cystitis and Neonatal Meningitis Exhibit Common Phylogenetic Origins and Virulence Factor Profiles. The Journal of Infectious Diseases. 183(3). 425–434. 57 indexed citations

15.

Johnson, James R., Timothy T. O’Bryan, Michael A. Kuskowski, & Joel N. Maslow. (2001). Ongoing Horizontal and Vertical Transmission of Virulence Genes and papA Alleles among Escherichia coli Blood Isolates from Patients with Diverse-Source Bacteremia. Infection and Immunity. 69(9). 5363–5374. 93 indexed citations

16.

Johnson, James R., et al.. (2001). Novel Molecular Variants of Allele I of the Escherichia coli P Fimbrial Adhesin Gene papG. Infection and Immunity. 69(4). 2318–2327. 19 indexed citations

17.

Johnson, James R., Adam L. Stell, Flemming Scheutz, et al.. (2000). Analysis of the F Antigen-Specific papA Alleles of Extraintestinal Pathogenic Escherichia coli Using a Novel Multiplex PCR-Based Assay. Infection and Immunity. 68(12). 7215–7215. 21 indexed citations

18.

Johnson, James R., Timothy T. O’Bryan, David A. Low, et al.. (2000). Evidence of Commonality between Canine and Human Extraintestinal PathogenicEscherichia coliStrains That ExpresspapGAllele III. Infection and Immunity. 68(6). 3327–3336. 93 indexed citations

19.

20.

Johnson, James R. & Timothy T. O’Bryan. (2000). Improved Repetitive-Element PCR Fingerprinting for Resolving Pathogenic and Nonpathogenic Phylogenetic Groups within Escherichia coli. Clinical and Diagnostic Laboratory Immunology. 7(2). 265–273. 75 indexed citations

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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