Orienka Hellferscee

National Health Laboratory Service — South Africa

Medicine · Health Sciences

26h-index3.0kcitations82works4.82yr avg
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Research Topics

Respiratory viral infections research(63), Influenza Virus Research Studies(40), Pneumonia and Respiratory Infections(34), COVID-19 epidemiological studies(12), Tracheal and airway disorders(7)

Publications81 total

Aetiological Fraction of Influenza, Respiratory Syncytial Virus and Other Respiratory Pathogens in Infants Aged < 1 Year Hospitalised With Respiratory and Non‐Respiratory Medical Illness in South Africa, 2016–2018
Influenza and Other Respiratory Viruses·2025Open Access
Respiratory pathogens detected in children aged <5 years hospitalized with severe respiratory illness, South Africa, 2017
Frontiers in Pediatrics·2025· 1 citedOpen Access
Temporal Changes in Nasopharyngeal Pneumococcal Colonization Density Associated With Respiratory Syncytial Virus and Influenza in a South African Household Cohort Study, 2016–2018
Open Forum Infectious Diseases·2025Open Access
Author response for "Aetiological Fraction of Influenza, Respiratory Syncytial Virus and Other Respiratory Pathogens in Infants Aged < 1 Year Hospitalised With Respiratory and Non-Respiratory Medical Illness in South Africa, 2016-2018"
2025
The roles of pre-season immunity, age, viral shedding, and community exposures in shaping influenza household transmission dynamics
2025· 1 citedOpen Access
Risk factors for severe respiratory syncytial virus-associated respiratory tract infection in a high HIV prevalence setting, South Africa, 2012 – 2018
BMC Infectious Diseases·2024· 3 citedOpen Access
Risk factors for severe respiratory syncytial virus-associated respiratory tract infection in a high HIV prevalence setting, prior to the SARS-CoV-2 pandemic, South Africa, 2012 – 2018
Research Square (Research Square)·2024Open Access
Correction: Transient increased risk of influenza infection following RSV infection in South Africa: findings from the PHIRST study, South Africa, 2016–2018
BMC Medicine·2024Open Access
Incidence and transmission of respiratory syncytial virus in urban and rural South Africa, 2017-2018
Nature Communications·2024· 38 citedOpen Access
Transient increased risk of influenza infection following RSV infection in South Africa: findings from the PHIRST study, South Africa, 2016–2018
BMC Medicine·2023· 4 citedOpen Access
Association of HIV Exposure and HIV Infection With In-hospital Mortality Among Hospitalized Infants <1 Year of Age, South Africa, 2016–2018
Journal of the Pediatric Infectious Diseases Society·2023· 3 citedOpen Access
TNFAIP3-interacting protein 1 polymorphisms and their association with symptomatic human respiratory syncytial virus infection and bronchiolitis in infants younger than one year from South Africa: A case-control study
International Journal of Infectious Diseases·2023Open Access
Review for "Tracking severe acute respiratory syndrome coronavirus 2 transmission and co‐infection with other acute respiratory pathogens using a sentinel surveillance system in Rift Valley, Kenya"
2023
Review for "Burden of respiratory syncytial virus in adults in the United Kingdom: A systematic literature review and gap analysis"
2023
Evidence of Rift Valley Fever Virus Circulation in Livestock and Herders in Southern Ghana
Viruses·2023· 8 citedOpen Access
Transient increased risk of influenza infection following RSV infection in South Africa; findings from the PHIRST study, South Africa, 2016-2018
2023Open Access
The attributable fraction of respiratory syncytial virus among patients of different ages with influenza-like illness and severe acute respiratory illness in a high HIV prevalence setting, South Africa, 2012-2016
International Journal of Infectious Diseases·2023· 4 citedOpen Access
Incidence and Transmission of Respiratory Syncytial Virus in Urban and Rural Communities in South Africa, 2017-2018: Results of the PHIRST Cohort Study
SSRN Electronic Journal·2023Open Access
The attributable fraction of respiratory syncytial virus among patients of different age with influenza-like illness and severe acute respiratory illness in a high HIV prevalence setting, South Africa, 2012-2016
2022· 3 citedOpen Access
Effectiveness of Influenza Vaccination of Pregnant Women for Prevention of Maternal and Early Infant Influenza-Associated Hospitalizations in South Africa: A Prospective Test-Negative Study
Open Forum Infectious Diseases·2022· 11 citedOpen Access
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Frequent Co-authors

Cheryl Cohen(48), Stefano Tempia(44), Florette K. Treurnicht(41), Sibongile Walaza(38), Anne von Gottberg(36), Nicole Wolter(33), Jocelyn Moyes(28), Ebrahim Variava(27), Halima Dawood(25), Meredith McMorrow(25), Adam L. Cohen(25), Shabir A. Madhi(23), Marietjie Venter(21), Marthi Pretorius(17), Kathleen Kahn(16), Johanna M. McAnerney(12), Neil Martinson(11), Michelle J. Groome(8), Thulisa Mkhencele(7), Limakatso Lebina(7)