Orienka Hellferscee

3.2k citations
49 papers · 817 · h-index 18

Impact in

  • Epidemiology top 5%
    • Respiratory viral infections research
    • Influenza Virus Research Studies
    • Pneumonia and Respiratory Infections
    • Pneumocystis jirovecii pneumonia detection and treatment
  • Infectious Diseases top 10%
    • Viral gastroenteritis research and epidemiology

Papers in

  • Epidemiology 39
    • Respiratory viral infections research 23
    • Influenza Virus Research Studies 19
    • Pneumonia and Respiratory Infections 6
  • Infectious Diseases 7
    • Viral Infections and Outbreaks Research 3
    • Viral Infections and Vectors 2
Co-authors
Cheryl Cohen (47 shared papers)Stefano Tempia (46 shared papers)Sibongile Walaza (42 shared papers)Ebrahim Variava (30 shared papers)Anne von Gottberg (36 shared papers)Nicole Wolter (36 shared papers)Halima Dawood (27 shared papers)Florette K. Treurnicht (40 shared papers)
Journals
Influenza and Other Respiratory Viruses (9 papers)Clinical Infectious Diseases (6 papers)PLoS ONE (5 papers)Emerging infectious diseases (5 papers)The Journal of Infectious Diseases (4 papers)
Partner nations
South AfricaUnited StatesSwitzerland

In The Last Decade

Orienka Hellferscee

48 papers receiving 806 citations

Peers

Orienka Hellferscee
Comparison fields: 5 of 69
  • Epidemiology 637
  • Infectious Diseases 148
  • Modeling and Simulation 32
  • Microbiology 34
  • Health 22
Replace Britta Gröndahl with:
Britta Gröndahl Germany
Núria Soldevila Spain
Alejandro Cané United States
L. Finelli United States
Arnold S. Monto United States
Bonnie C. K. Wong Hong Kong
Robert L. Atmar United States
Chisha Sikazwe Australia
Sonia Tamames Spain
Adriana Peci Canada
Orienka Hellferscee relative to Britta Gröndahl Germany Britta Gröndahl's profile →
Citations per field
00.5×2×3×4.4×
Britta Gröndahl · 1×
Citations per year

Countries citing papers authored by Orienka Hellferscee

Since Specialization
Citations

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

Fields of papers citing papers by Orienka Hellferscee

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Orienka Hellferscee, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Orienka Hellferscee Line = papers co-authored together Orienka Hellferscee links everyone, so they are left out of the graph.

All Works

20 of 20 papers shown

Showing the 20 most-cited of 49 papers — load more, or switch the sort, to bring in the rest.

#Work
1
High Nasopharyngeal Pneumococcal Density, Increased by Viral Coinfection, Is Associated With Invasive Pneumococcal Pneumonia
The Journal of Infectious Diseases ·Nicole Wolter, Stefano Tempia, Cheryl Cohen, Shabir A. Madhi, Marietjie Venter, Jocelyn Moyes, Sibongile Walaza, Babatyi Malope‐Kgokong, Michelle J. Groome, Mignon du Plessis, Victoria Magomani, Marthi Pretorius, Orienka Hellferscee, Halima Dawood, Kathleen Kahn, Ebrahim Variava, Keith P. Klugman, Anne von Gottberg
2014140
2
Risk Factors for Influenza-Associated Severe Acute Respiratory Illness Hospitalization in South Africa, 2012–2015
Open Forum Infectious Diseases ·Stefano Tempia, Sibongile Walaza, Jocelyn Moyes, Adam L. Cohen, Claire von Mollendorf, Florette K. Treurnicht, Marietjie Venter, Marthi Pretorius, Orienka Hellferscee, Senzo Mtshali, Mpho Seleka, Akhona Tshangela, Athermon Nguweneza, Johanna M. McAnerney, Nicole Wolter, Anne von Gottberg, Halima Dawood, Ebrahim Variava, Shabir A. Madhi, Cheryl Cohen
201756
3
The role of influenza, RSV and other common respiratory viruses in severe acute respiratory infections and influenza-like illness in a population with a high HIV sero-prevalence, South Africa 2012–2015
Journal of Clinical Virology ·Marthi Pretorius, Stefano Tempia, Sibongile Walaza, Adam L. Cohen, Jocelyn Moyes, Ebrahim Variava, Halima Dawood, Mpho Seleka, Orienka Hellferscee, Florette K. Treurnicht, Cheryl Cohen, Marietjie Venter
201550
4
Severity of Respiratory Syncytial Virus Lower Respiratory Tract Infection With Viral Coinfection in HIV-Uninfected Children
Clinical Infectious Diseases ·Natalie I Mazur, Louis Bont, Adam L. Cohen, Cheryl Cohen, Anne von Gottberg, Michelle J. Groome, Orienka Hellferscee, Kerstin Klipstein‐Grobusch, Omphile Mekgoe, Fathima Naby, Jocelyn Moyes, Stefano Tempia, Florette K. Treurnicht, Marietjie Venter, Sibongile Walaza, Nicole Wolter, Shabir A. Madhi, (unknown)
201647
5
Epidemiology of Severe Acute Respiratory Illness (SARI) among Adults and Children Aged ≥5 Years in a High HIV-Prevalence Setting, 2009–2012
PLoS ONE ·Cheryl Cohen, Sibongile Walaza, Jocelyn Moyes, Michelle J. Groome, Stefano Tempia, Marthi Pretorius, Orienka Hellferscee, Halima Dawood, Summaya Haffejee, Ebrahim Variava, Kathleen Kahn, Akhona Tshangela, Anne von Gottberg, Nicole Wolter, Adam L. Cohen, Babatyi Malope‐Kgokong, Marietjie Venter, Shabir A. Madhi
201542
6
Epidemiology of Influenza Virus Types and Subtypes in South Africa, 2009–20121
Emerging infectious diseases ·Adam L. Cohen, Orienka Hellferscee, Marthi Pretorius, Florette K. Treurnicht, Sibongile Walaza, Shabir A. Madhi, Michelle J. Groome, Halima Dawood, Ebrahim Variava, Kathleen Kahn, Nicole Wolter, Anne von Gottberg, Stefano Tempia, Marietjie Venter, Cheryl Cohen
201439
7
The Role of Human Immunodeficiency Virus in Influenza- and Respiratory Syncytial Virus–associated Hospitalizations in South African Children, 2011–2016
Clinical Infectious Diseases ·Meredith McMorrow, Stefano Tempia, Sibongile Walaza, Florette K. Treurnicht, Jocelyn Moyes, Adam L. Cohen, Marthi Pretorius, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Arthemon Nguweneza, Johanna M. McAnerney, Fathima Naby, Omphile Mekgoe, Marietjie Venter, Shabir A. Madhi, Cheryl Cohen
201832
8
Health and economic burden of influenza‐associated illness in South Africa, 2013‐2015
Influenza and Other Respiratory Viruses ·Stefano Tempia, Jocelyn Moyes, Adam L. Cohen, Sibongile Walaza, Ijeoma Edoka, Meredith McMorrow, Florette K. Treurnicht, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Athermon Nguweneza, Johanna M. McAnerney, Halima Dawood, Ebrahim Variava, Cheryl Cohen
201929
9
Epidemiology and Molecular Identification and Characterization ofMycoplasma pneumoniae, South Africa, 2012–2015
Emerging infectious diseases ·Maimuna Carrim, Nicole Wolter, Alvaro J. Benitez, Stefano Tempia, Mignon du Plessis, Sibongile Walaza, Fahima Moosa, Maureen H. Diaz, Bernard J. Wolff, Florette K. Treurnicht, Orienka Hellferscee, Halima Dawood, Ebrahim Variava, Cheryl Cohen, Jonas M. Winchell, Anne von Gottberg
201828
10
Attributable Fraction of Influenza Virus Detection to Mild and Severe Respiratory Illnesses in HIV-Infected and HIV-Uninfected Patients, South Africa, 2012–2016
Emerging infectious diseases ·Stefano Tempia, Sibongile Walaza, Jocelyn Moyes, Adam L. Cohen, Claire von Mollendorf, Meredith McMorrow, Florette K. Treurnicht, Marietjie Venter, Marthi Pretorius, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Athermon Nguweneza, Johanna M. McAnerney, Halima Dawood, Ebrahim Variava, Shabir A. Madhi, Cheryl Cohen
201725
11
Epidemiology of influenza B/Yamagata and B/Victoria lineages in South Africa, 2005-2014
PLoS ONE ·Mpho Seleka, Florette K. Treurnicht, Stefano Tempia, Orienka Hellferscee, Senzo Mtshali, Adam L. Cohen, Amelia Buys, Johanna M. McAnerney, Terry G. Besselaar, Marthi Pretorius, Anne von Gottberg, Sibongile Walaza, Cheryl Cohen, Shabir A. Madhi, Marietjie Venter
201724
12
Human metapneumovirus-associated severe acute respiratory illness hospitalisation in HIV-infected and HIV-uninfected South African children and adults
Journal of Clinical Virology ·Michelle J. Groome, Jocelyn Moyes, Cheryl Cohen, Sibongile Walaza, Stefano Tempia, Marthi Pretorius, Orienka Hellferscee, Meera Chhagan, Sumayya Haffejee, Halima Dawood, Kathleen Kahn, Ebrahim Variava, Adam L. Cohen, Anne von Gottberg, Nicole Wolter, Marietjie Venter, Shabir A. Madhi
201523
13
Enterovirus genotypes among patients with severe acute respiratory illness, influenza‐like illness, and asymptomatic individuals in South Africa, 2012‐2014
Journal of Medical Virology ·Orienka Hellferscee, Stefano Tempia, Sibongile Walaza, Ebrahim Variava, Halima Dawood, Nicole Wolter, Shabir A. Madhi, Mignon du Plessis, Cheryl Cohen, Florette K. Treurnicht
201722
14
The Impact of Influenza and Tuberculosis Interaction on Mortality Among Individuals Aged ≥15 Years Hospitalized With Severe Respiratory Illness in South Africa, 2010–2016
Open Forum Infectious Diseases ·Sibongile Walaza, Stefano Tempia, Halima Dawood, Ebrahim Variava, Nicole Wolter, Andries Dreyer, Jocelyn Moyes, Claire von Mollendorf, Meredith McMorrow, Anne von Gottberg, Sumayya Haffejee, Marietjie Venter, Florette K. Treurnicht, Orienka Hellferscee, Neil Martinson, Nazir Ismail, Cheryl Cohen
201922
15
Human bocavirus, coronavirus, and polyomavirus detected among patients hospitalised with severe acute respiratory illness in South Africa, 2012 to 2013
Health Science Reports ·Kathleen Subramoney, Orienka Hellferscee, Marthi Pretorius, Stefano Tempia, Meredith McMorrow, Anne von Gottberg, Nicole Wolter, Ebrahim Variava, Halima Dawood, Kathleen Kahn, Sibongile Walaza, Shabir A. Madhi, Cheryl Cohen, Marietjie Venter, Florette K. Treurnicht
201820
16
Quantifying How Different Clinical Presentations, Levels of Severity, and Healthcare Attendance Shape the Burden of Influenza-associated Illness: A Modeling Study From South Africa
Clinical Infectious Diseases ·Stefano Tempia, Sibongile Walaza, Jocelyn Moyes, Adam L. Cohen, Meredith McMorrow, Florette K. Treurnicht, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Arthemon Nguweneza, Johanna M. McAnerney, Halima Dawood, Ebrahim Variava, Shabir A. Madhi, Cheryl Cohen
201820
17
The effects of the attributable fraction and the duration of symptoms on burden estimates of influenza‐associated respiratory illnesses in a high HIV prevalence setting, South Africa, 2013‐2015
Influenza and Other Respiratory Viruses ·Stefano Tempia, Sibongile Walaza, Jocelyn Moyes, Adam L. Cohen, Claire von Mollendorf, Meredith McMorrow, Sarona Mhlanga, Florette K. Treurnicht, Marietjie Venter, Marthi Pretorius, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Arthemon Nguweneza, Johanna M. McAnerney, Halima Dawood, Ebrahim Variava, Shabir A. Madhi, Cheryl Cohen
201717
18
Genetic diversity and molecular epidemiology of human rhinoviruses in South Africa
Influenza and Other Respiratory Viruses ·Marthi Pretorius, Stefano Tempia, Florette K. Treurnicht, Sibongile Walaza, Adam L. Cohen, Jocelyn Moyes, Orienka Hellferscee, Ebrahim Variava, Halima Dawood, Meera Chhagan, Sumayya Haffjee, Shabir A. Madhi, Cheryl Cohen, Marietjie Venter
201417
19
Legionnaires’ Disease in South Africa, 2012–2014
Emerging infectious diseases ·Nicole Wolter, Maimuna Carrim, Cheryl Cohen, Stefano Tempia, Sibongile Walaza, Philip Sahr, Linda de Gouveia, Florette K. Treurnicht, Orienka Hellferscee, Adam L. Cohen, Alvaro J. Benitez, Halima Dawood, Ebrahim Variava, Jonas M. Winchell, Anne von Gottberg
201515
20
The national burden of influenza‐like illness and severe respiratory illness overall and associated with nine respiratory viruses in South Africa, 2013–2015
Influenza and Other Respiratory Viruses ·Stefano Tempia, Jocelyn Moyes, Adam L. Cohen, Sibongile Walaza, Meredith McMorrow, Florette K. Treurnicht, Orienka Hellferscee, Nicole Wolter, Anne von Gottberg, Halima Dawood, Ebrahim Variava, Cheryl Cohen
202214

About Orienka Hellferscee

Orienka Hellferscee is a scholar working on Epidemiology, Infectious Diseases, Modeling and Simulation, Cardiology and Cardiovascular Medicine and Microbiology, having authored 49 papers that have together received 817 indexed citations. Recurring topics across this work include Respiratory viral infections research (23 papers), Influenza Virus Research Studies (19 papers), Pneumonia and Respiratory Infections (6 papers), COVID-19 epidemiological studies (3 papers), Viral Infections and Outbreaks Research (3 papers), Bacterial Infections and Vaccines (2 papers), Viral Infections and Immunology Research (2 papers) and Viral Infections and Vectors (2 papers). The work is most often cited by research in Epidemiology (637 citations), Infectious Diseases (148 citations), Modeling and Simulation (32 citations), Microbiology (34 citations) and Health (22 citations). Orienka Hellferscee has collaborated with scholars based in South Africa, United States and Switzerland. Frequent co-authors include Cheryl Cohen, Stefano Tempia, Sibongile Walaza, Ebrahim Variava, Anne von Gottberg, Nicole Wolter, Halima Dawood, Florette K. Treurnicht, Marietjie Venter and Jocelyn Moyes. Their work appears in journals such as Influenza and Other Respiratory Viruses, Clinical Infectious Diseases, PLoS ONE, Emerging infectious diseases and The Journal of Infectious Diseases.

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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