Sonja Hansen

4.8k total citations · 1 hit paper
62 papers, 2.4k citations indexed

About

Sonja Hansen is a scholar working on Infectious Diseases, Applied Microbiology and Biotechnology and Critical Care and Intensive Care Medicine. According to data from OpenAlex, Sonja Hansen has authored 62 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Infectious Diseases, 23 papers in Applied Microbiology and Biotechnology and 18 papers in Critical Care and Intensive Care Medicine. Recurrent topics in Sonja Hansen's work include Antibiotic Use and Resistance (23 papers), Nosocomial Infections in ICU (18 papers) and Infection Control in Healthcare (17 papers). Sonja Hansen is often cited by papers focused on Antibiotic Use and Resistance (23 papers), Nosocomial Infections in ICU (18 papers) and Infection Control in Healthcare (17 papers). Sonja Hansen collaborates with scholars based in Germany, Sweden and France. Sonja Hansen's co-authors include Petra Gastmeier, Michael Behnke, Nada Rayes, Stig Bengmark, Daniel Seehofer, P. Neuhaus, Stefan Serke, H. Rüden, Irina Zuschneid and Sabine Stamm-Balderjahn and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Hepatology and The Lancet Infectious Diseases.

In The Last Decade

Sonja Hansen

60 papers receiving 2.3k 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.

Prevalence of healthcare-associated infections, estimated incidence and composite antimicrobial resistance index in acute care hospitals and long-term care facilities: results from two European point prevalence surveys, 2016 to 2017

2018 448 citations C. Suetens, Katrien Latour et al. profile →

Peers

Countries citing papers authored by Sonja Hansen

Since Specialization

Citations

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

Fields of papers citing papers by Sonja Hansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sonja Hansen

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

#	Work	Indexed citations
1	State of infection prevention and control in Austrian hospitals: data from 81 hospitals completing the WHO Infection Prevention and Control Assessment Framework (IPCAF) 2025 ·Antimicrobial Resistance and Infection Control ·(unknown), Andrea Grisold, Agnes Wechsler-Fördös, (unknown), Michael Behnke, Sonja Hansen, Christine Geffers, Seven Johannes Sam Aghdassi	2
2	Assessing infection prevention and control structures in German hospitals after the COVID-19 pandemic using the WHO infection prevention and control assessment framework (IPCAF): results from 660 hospitals and comparison with a pre-pandemic survey 2024 ·Antimicrobial Resistance and Infection Control ·(unknown), (unknown), Sonja Hansen, Michael Behnke, Christine Geffers, Seven Johannes Sam Aghdassi	3
3	Sexual and gender minority health: a roadmap for developing evidence-based medical school curricula 2024 ·SHILAP Revista de lepidopterología ·(unknown), (unknown), (unknown), (unknown), (unknown), Sonja Hansen, Chad Brown, (unknown)	0
4	Healthcare-Associated Infections and the Use of Antibiotics in German Hospitals 2024 ·Deutsches Ärzteblatt international ·Seven Johannes Sam Aghdassi, Sonja Hansen, Luis Alberto Peña Diaz, (unknown), (unknown), Christine Geffers, Petra Gastmeier, Brar Piening, Michael Behnke	4
5	Quantification of time delay between screening and subsequent initiation of contact isolation for carriers of extended-spectrum beta-lactamase (ESBL)–producing Enterobacterales: A post hoc subgroup analysis of the R-GNOSIS WP5 Trial 2023 ·Infection Control and Hospital Epidemiology ·Friederike Maechler, Frank Schwab, Sonja Hansen, Michael Behnke, Marc J. M. Bonten, Rafael Cantón, Cristina Díaz-Agero Pérez, Carolina Fankhauser, Stephan Harbarth, Benedikt Huttner, Axel Kola, Petra Gastmeier	2
6	Antimicrobial resistance control in the emergency department: a need for concrete improvement 2022 ·Antimicrobial Resistance and Infection Control ·Martin Pin, Rajan Somasundaram, Christian Wrede, Frank Schwab, Petra Gastmeier, Sonja Hansen	2
7	Risk factors for nosocomial SARS-CoV-2 infections in patients: results from a retrospective matched case–control study in a tertiary care university center 2022 ·Antimicrobial Resistance and Infection Control ·Seven Johannes Sam Aghdassi, Frank Schwab, Luis Alberto Peña Diaz, (unknown), (unknown), Sonja Hansen, (unknown), Brar Piening, B Schlosser, Sandra M. Schneider, Beate Weikert, Miriam Wiese‐Posselt, Sebastián Wolff, Michael Behnke, Petra Gastmeier, Christine Geffers	10
8	Evaluating infection prevention and control programs in Austrian acute care hospitals using the WHO Infection Prevention and Control Assessment Framework 2020 ·Antimicrobial Resistance and Infection Control ·Seven Johannes Sam Aghdassi, Andrea Grisold, Agnes Wechsler-Fördös, Sonja Hansen, P. Bischoff, Michael Behnke, Petra Gastmeier	29
9	Contact isolation versus standard precautions to decrease acquisition of extended-spectrum β-lactamase-producing Enterobacterales in non-critical care wards: a cluster-randomised crossover trial 2020 ·The Lancet Infectious Diseases ·Friederike Maechler, Frank Schwab, Sonja Hansen, Carolina Fankhauser, Stephan Harbarth, Benedikt Huttner, Cristina Díaz-Agero Pérez, (unknown), Rafael Cantón, Patricia Ruíz-Garbajosa, Hetty E. M. Blok, Marc J. M. Bonten, (unknown), Joost Schotsman, Ben S. Cooper, Michael Behnke, (unknown), Axel Kola, Petra Gastmeier	44
10	Elektive Tracheostomie bei COVID-19-Patienten – Erfahrungen mit einem standardisierten interdisziplinären Vorgehen 2020 ·HNO ·(unknown), (unknown), Christian Berger, Sascha Treskatsch, Stefan Angermair, Sonja Hansen, Veit M. Hofmann	1
11	A national survey on the implementation of key infection prevention and control structures in German hospitals: results from 736 hospitals conducting the WHO Infection Prevention and Control Assessment Framework (IPCAF) 2019 ·Antimicrobial Resistance and Infection Control ·Seven Johannes Sam Aghdassi, Sonja Hansen, P. Bischoff, Michael Behnke, Petra Gastmeier	42
12	Testing of the WHO Infection Prevention and Control Assessment Framework at acute healthcare facility level 2019 ·Journal of Hospital Infection ·Sara Tomczyk, Seven Johannes Sam Aghdassi, Julie Storr, Sonja Hansen, Andrew J. Stewardson, P. Bischoff, Petra Gastmeier, Benedetta Allegranzi	23
13	Linezolid use in German acute care hospitals: results from two consecutive national point prevalence surveys 2019 ·Antimicrobial Resistance and Infection Control ·Tobias Siegfried Kramer, Frank Schwab, Michael Behnke, Sonja Hansen, Petra Gastmeier, Seven Johannes Sam Aghdassi	13
14	Prevalence of healthcare-associated infections, estimated incidence and composite antimicrobial resistance index in acute care hospitals and long-term care facilities: results from two European point prevalence surveys, 2016 to 2017 2018 ·Archive ouverte UNIGE (University of Geneva) ·C. Suetens, Katrien Latour, Tommi Kärki, Enrico Ricchizzi, Pete Kinross, Maria Luisa Moro, Béatrice Jans, Susan Hopkins, Sonja Hansen, Outi Lyytikäinen, J. Reilly, Aleksander Deptuła, Walter Zingg, Diamantis Plachouras, Dominique L. Monnet	48
15	Antibiotic usage in German hospitals: results of the second national prevalence study 2013 ·Journal of Antimicrobial Chemotherapy ·Sonja Hansen, D. Sohr, Brar Piening, Luis Alberto Peña Diaz, (unknown), Rasmus Leistner, Elisabeth Meyer, Petra Gastmeier, Michael Behnke	30
16	Nosocomial Infection and Antibiotic Use 2013 ·Deutsches Ärzteblatt international ·Michael Behnke, Sonja Hansen, Rasmus Leistner, Luis Alberto Peña Diaz, (unknown), D. Sohr, Petra Gastmeier, Brar Piening	77
17	Finding a Method for Optimizing Risk Adjustment When Comparing Surgical-Site Infection Rates 2004 ·Infection Control and Hospital Epidemiology ·Christian Brandt, Sonja Hansen, D. Sohr, Franz Daschner, H. Rüden, Petra Gastmeier	61
18	Der Beitrag von Ausbruchanalysen zur Pr�vention nosokomialer Infektionen 2004 ·Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz ·Petra Gastmeier, Sabine Stamm-Balderjahn, (unknown), (unknown), Irina Zuschneid, (unknown), Sonja Hansen	3
19	Surveillance postoperativer Wundinfektionen – Referenzdaten des Krankenhaus-Infektions-Surveillance-Systems (KISS) 2002 ·Der Chirurg ·(unknown), D. Sohr, Sonja Hansen, (unknown), Franz Daschner, H. Rüden, Petra Gastmeier	9
20	Early enteral supply of lactobacillus and fiber versus selective bowel decontamination: a controlled trial in liver transplant recipients 2002 ·Transplantation ·Nada Rayes, Daniel Seehofer, Sonja Hansen, (unknown), (unknown), Stefan Serke, Stig Bengmark, P. Neuhaus	336

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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