O. Hammerberg

862 total citations
25 papers, 639 citations indexed

About

O. Hammerberg is a scholar working on Infectious Diseases, Epidemiology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, O. Hammerberg has authored 25 papers receiving a total of 639 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Infectious Diseases, 7 papers in Epidemiology and 7 papers in Public Health, Environmental and Occupational Health. Recurrent topics in O. Hammerberg's work include Antimicrobial Resistance in Staphylococcus (8 papers), Neonatal and Maternal Infections (5 papers) and Bacterial Identification and Susceptibility Testing (3 papers). O. Hammerberg is often cited by papers focused on Antimicrobial Resistance in Staphylococcus (8 papers), Neonatal and Maternal Infections (5 papers) and Bacterial Identification and Susceptibility Testing (3 papers). O. Hammerberg collaborates with scholars based in Canada. O. Hammerberg's co-authors include Hanna Bialkowska-Hobrzanska, L Lafleur, C. H. Pai, Melvin I. Marks, Daniel B. Gregson, Husn H. Frayha, Jeffrey L. Watts, G. H. Cassell, M. A. Chernesky and J B Mahony and has published in prestigious journals such as Journal of Clinical Microbiology, The Journal of Pediatrics and Clinical Microbiology and Infection.

In The Last Decade

O. Hammerberg

25 papers receiving 565 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
O. Hammerberg Canada	14	259	169	139	119	113	25	639
J. Croizé France	20	219 0.8×	318 1.9×	119 0.9×	90 0.8×	307 2.7×	78	1.2k
Laura Mandel United States	9	457 1.8×	145 0.9×	128 0.9×	62 0.5×	167 1.5×	15	761
Jennifer S. Daly United States	16	639 2.5×	430 2.5×	187 1.3×	54 0.5×	143 1.3×	36	1.2k
M. Teresa Jiménez de Anta Spain	20	186 0.7×	272 1.6×	60 0.4×	40 0.3×	125 1.1×	29	894
Claudine E. Fasching United States	18	181 0.7×	429 2.5×	171 1.2×	46 0.4×	167 1.5×	30	1.1k
O. A. Okubadejo United Kingdom	15	97 0.4×	119 0.7×	96 0.7×	36 0.3×	45 0.4×	26	479
Arne Runehagen Sweden	10	347 1.3×	133 0.8×	140 1.0×	71 0.6×	73 0.6×	18	753
Carmen Ponte Spain	17	261 1.0×	361 2.1×	63 0.5×	41 0.3×	190 1.7×	47	922
John Keiser United States	14	222 0.9×	296 1.8×	102 0.7×	22 0.2×	142 1.3×	38	627
Phyllis M. Rountree Australia	16	336 1.3×	129 0.8×	77 0.6×	46 0.4×	129 1.1×	37	652

Countries citing papers authored by O. Hammerberg

Since Specialization

Citations

This map shows the geographic impact of O. Hammerberg'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 O. Hammerberg with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. Hammerberg more than expected).

Fields of papers citing papers by O. Hammerberg

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by O. Hammerberg. 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 O. Hammerberg. The network helps show where O. Hammerberg may publish in the future.

Co-authorship network of co-authors of O. Hammerberg

This figure shows the co-authorship network connecting the top 25 collaborators of O. Hammerberg. A scholar is included among the top collaborators of O. Hammerberg 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 O. Hammerberg. O. Hammerberg 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

Elsayed, Sameer, et al.. (2003). Streptococcus equi subspecies equi (Lancefield group C) meningitis in a child. Clinical Microbiology and Infection. 9(8). 869–872. 20 indexed citations

Gregson, Daniel B., et al.. (1997). Role of Ureaplasma urealyticum and Chlamydia trachomatis in development of bronchopulmonary dysplasia in very low birth weight infants. The Pediatric Infectious Disease Journal. 16(4). 364–369. 46 indexed citations

Hammerberg, O., et al.. (1995). Diversity of methicillin-resistantStaphylococcus aureus isolated in a Canadian hospital. European Journal of Clinical Microbiology & Infectious Diseases. 14(3). 199–205. 4 indexed citations

Hodsman, Anthony B., et al.. (1994). Surveillance and Prophylactic Intervention of Staphylococcus aureus Nasal Colonization in a Hemodialysis Unit. American Journal of Nephrology. 14(1). 9–13. 6 indexed citations

daSilva, Orlando & O. Hammerberg. (1994). Diagnostic value of leukocyte indices in late neonatal sepsis.. PubMed. 13(5). 409–11. 16 indexed citations

Bialkowska-Hobrzanska, Hanna, et al.. (1993). Molecular characterization of the coagulase-negative staphylococcal surface flora of premature neonates. Journal of General Microbiology. 139(12). 2939–2944. 12 indexed citations

Hammerberg, O., et al.. (1992). Comparison of blood cultures with corresponding venipuncture site cultures of specimens from hospitalized premature neonates. The Journal of Pediatrics. 120(1). 120–124. 16 indexed citations

Hammerberg, O., et al.. (1991). Isolation ofAgrobacterium radiobacter from a central venous catheter. European Journal of Clinical Microbiology & Infectious Diseases. 10(5). 450–452. 16 indexed citations

Bialkowska-Hobrzanska, Hanna, et al.. (1990). Typing of coagulase-negative staphylococci by southern hybridization of chromosomal DNA fingerprints using a ribosomal RNA probe. European Journal of Clinical Microbiology & Infectious Diseases. 9(8). 588–594. 49 indexed citations

10.

Hammerberg, O., et al.. (1990). Fetal varicella syndrome.. PubMed. 9(11). 854–5. 10 indexed citations

11.

Bialkowska-Hobrzanska, Hanna, et al.. (1990). A method for DNA restriction endonuclease fingerprinting of coagulase-negative staphylococci. Journal of Microbiological Methods. 12(1). 41–49. 22 indexed citations

12.

Bialkowska-Hobrzanska, Hanna, et al.. (1990). Evaluation of restriction endonuclease fingerprinting of chromosomal DNA and plasmid profile analysis for characterization of multiresistant coagulase-negative staphylococci in bacteremic neonates. Journal of Clinical Microbiology. 28(2). 269–275. 70 indexed citations

13.

Hammerberg, O., et al.. (1989). Randomized trial using piperacillin versus ampicillin and amikacin for treatment of premature neonates with risk factors for sepsis. European Journal of Clinical Microbiology & Infectious Diseases. 8(3). 241–244. 13 indexed citations

14.

Frayha, Husn H., Jeffrey L. Watts, O. Hammerberg, et al.. (1988). Role of Ureaplasma urealyticum and other pathogens in the development of chronic lung disease of prematurity.. PubMed. 7(8). 547–51. 88 indexed citations

15.

Rosenfeld, Jack, et al.. (1986). Simplified methods for preparation of microbial fatty acids for analysis by gas chromatography with electron-capture detection. Journal of Chromatography B Biomedical Sciences and Applications. 378(1). 9–16. 13 indexed citations

16.

Maki, Anne & O. Hammerberg. (1985). Clinical implications of bacterial glycocalyx.. PubMed. 28(1). 5–6. 1 indexed citations

17.

Rawls, William E. & O. Hammerberg. (1984). Epidemiology of the herpes simplex viruses. Clinics in Dermatology. 2(2). 29–45. 6 indexed citations

18.

Hammerberg, O., et al.. (1983). Infective endocarditis caused by Kingella kingae.. PubMed. 128(9). 1087–8. 21 indexed citations

19.

Marks, Melvin I., et al.. (1980). Yersinia enterocolitica gastroenteritis: A prospective study of clinical, bacteriologic, and epidemiologic features. The Journal of Pediatrics. 96(1). 26–31. 133 indexed citations

20.

Lafleur, L, et al.. (1979). Yersinia enterocolitica infection in children: 4 years experience in the Montreal urban community.. PubMed. 5. 298–303. 7 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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