Sandra Jo Hammer

431 total citations
8 papers, 285 citations indexed

About

Sandra Jo Hammer is a scholar working on Emergency Medicine, Infectious Diseases and Epidemiology. According to data from OpenAlex, Sandra Jo Hammer has authored 8 papers receiving a total of 285 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Emergency Medicine, 3 papers in Infectious Diseases and 3 papers in Epidemiology. Recurrent topics in Sandra Jo Hammer's work include Intramuscular injections and effects (4 papers), Clostridium difficile and Clostridium perfringens research (3 papers) and Pneumonia and Respiratory Infections (2 papers). Sandra Jo Hammer is often cited by papers focused on Intramuscular injections and effects (4 papers), Clostridium difficile and Clostridium perfringens research (3 papers) and Pneumonia and Respiratory Infections (2 papers). Sandra Jo Hammer collaborates with scholars based in United States, Canada and Germany. Sandra Jo Hammer's co-authors include Wikke Walop, Katrin Kohl, Paul T. Heath, Frederick Varricchio, Renald Hennig, Edward Rothstein, Scott A. Halperin, Anne Schuind, Jane Gidudu and Jennifer Zipprich and has published in prestigious journals such as PEDIATRICS, Clinical Infectious Diseases and Vaccine.

In The Last Decade

Sandra Jo Hammer

8 papers receiving 271 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sandra Jo Hammer United States	7	161	139	78	59	46	8	285
L Barreto Canada	10	309 1.9×	332 2.4×	87 1.1×	49 0.8×	16 0.3×	15	409
Stewart Reid New Zealand	11	395 2.5×	217 1.6×	68 0.9×	67 1.1×	7 0.2×	15	470
F. Vié le Sage France	10	195 1.2×	94 0.7×	107 1.4×	23 0.4×	8 0.2×	31	326
Candice L. Robinson United States	9	187 1.2×	32 0.2×	67 0.9×	160 2.7×	10 0.2×	17	318
G. A. Nankervis United States	10	300 1.9×	51 0.4×	136 1.7×	47 0.8×	7 0.2×	11	404
C. Ethevenaux France	8	371 2.3×	262 1.9×	56 0.7×	58 1.0×	20 0.4×	11	452
Emin Sami Arısoy Türkiye	10	94 0.6×	19 0.1×	128 1.6×	16 0.3×	39 0.8×	26	311
Lois Bayigga Uganda	9	134 0.8×	167 1.2×	89 1.1×	6 0.1×	38 0.8×	13	357
С. М. Харит Russia	10	150 0.9×	69 0.5×	67 0.9×	41 0.7×	5 0.1×	63	255
Roberto Gulminetti Italy	14	319 2.0×	101 0.7×	406 5.2×	11 0.2×	82 1.8×	39	667

Countries citing papers authored by Sandra Jo Hammer

Since Specialization

Citations

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

Fields of papers citing papers by Sandra Jo Hammer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sandra Jo Hammer. 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 Sandra Jo Hammer. The network helps show where Sandra Jo Hammer may publish in the future.

Co-authorship network of co-authors of Sandra Jo Hammer

This figure shows the co-authorship network connecting the top 25 collaborators of Sandra Jo Hammer. A scholar is included among the top collaborators of Sandra Jo Hammer 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 Sandra Jo Hammer. Sandra Jo Hammer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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8 of 8 papers shown

1.

Winter, Kathleen, Jennifer Zipprich, Kathleen Harriman, et al.. (2015). Risk Factors Associated With Infant Deaths From Pertussis: A Case-Control Study. Clinical Infectious Diseases. 61(7). 1099–1106. 109 indexed citations

2.

Gidudu, Jane, Katrin Kohl, Scott A. Halperin, et al.. (2008). A local reaction at or near injection site: Case definition and guidelines for collection, analysis, and presentation of immunization safety data. Vaccine. 26(52). 6800–6813. 70 indexed citations

3.

Kohl, Katrin, L. Ball, Jane Gidudu, et al.. (2007). Abscess at injection site: Case definition and guidelines for collection, analysis, and presentation of immunization safety data. Vaccine. 25(31). 5821–5838. 17 indexed citations

4.

Kohl, Katrin, Wikke Walop, Jane Gidudu, et al.. (2007). Swelling at or near injection site: Case definition and guidelines for collection, analysis and presentation of immunization safety data. Vaccine. 25(31). 5858–5874. 26 indexed citations

5.

Halperin, Scott A., Katrin Kohl, Jane Gidudu, et al.. (2007). Cellulitis at injection site: Case definition and guidelines for collection, analysis, and presentation of immunization safety data. Vaccine. 25(31). 5803–5820. 13 indexed citations

6.

Kohl, Katrin, Wikke Walop, Jane Gidudu, et al.. (2007). Induration at or near injection site: Case definition and guidelines for collection, analysis, and presentation of immunization safety data. Vaccine. 25(31). 5839–5857. 16 indexed citations

7.

Rothstein, Edward, Katrin Kohl, L. Ball, et al.. (2003). Nodule at injection site as an adverse event following immunization: case definition and guidelines for data collection, analysis, and presentation. Vaccine. 22(5-6). 575–585. 33 indexed citations

8.

Hammer, Sandra Jo. (1993). Saddened Not Amused. PEDIATRICS. 91(3). 680–680. 1 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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