Browsing Research Articles (Immunology) by Author "Ueckermann, Veronica"

Browsing Research Articles (Immunology) by Author "Ueckermann, Veronica"

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  • Ad26.COV2.S breakthrough infections induce high titers of neutralizing antibodies against Omicron and other SARS-CoV-2 variants of concern 
    Kitchin, Dale; Richardson, Simone I.; Van der Mescht, Mieke Adri; Motlou, Thopisang; Mzindle, Nonkululeko; Moyo-Gwete, Thandeka; Makhado, Zanele; Ayres, Frances; Manamela, Nelia P.; Spencer, Holly; Lambson, Bronwen; Oosthuysen, Brent; Kaldine, Haajira; Du Pisanie, Marizane; Mennen, Mathilda; Skelem, Sango; Williams, Noleen; Ntusi, Ntobeko A.B.; Burgers, Wendy A.; Gray, Glenda G.; Bekker, Linda-Gail; Boswell, Michael T.; Rossouw, Theresa M.; Ueckermann, Veronica; Moore, Penny L. (Cell Press, 2022-03-15)
    The Janssen (Johnson & Johnson) Ad26.COV2.S non-replicating viral vector vaccine has been widely deployed for COVID-19 vaccination programs in resource-limited settings. Here we confirm that neutralizing and binding ...
  • Antibody-dependent cellular cytotoxicity against SARS-CoV-2 Omicron sub-lineages is reduced in convalescent sera regardless of infecting variant 
    Richardson, Simone I.; Kgagudi, Prudence; Manamela, Nelia P.; Kaldine, Haajira; Venter, Elizabeth M.; Pillay, Thanusha; Lambson, Bronwen E.; Van der Mescht, Mieke Adri; Hermanus, Tandile; Balla, Sashkia R.; De Beer, Zelda; De Villiers, Talita R.; Bodenstein, Annie; Van den Berg, Gretha; Du Pisanie, Marizane; Burgers, Wendy A.; Ntusi, Ntobeko A.B.; Abdullah, Fareed; Ueckermann, Veronica; Rossouw, Theresa; Boswell, Michael T.; Moore, Penny L. (Cell Press, 2023-01)
    The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron BA.4 and BA.5 variants caused major waves of infections. Here, we assess the sensitivity of BA.4 to binding, neutralization, and antibodydependent cellular ...
  • Comparison of platelet-and endothelial-associated biomarkers of disease activity in people hospitalized with Covid-19 with and without HIV co-infection 
    Van der Mescht, Mieke Adri; Steel, Helen C.; De Beer, Zelda; Abdullah, Fareed; Ueckermann, Veronica; Anderson, Ronald; Rossouw, Theresa (Frontiers Media, 2023-08-14)
    INTRODUCTION : SARS-CoV-2 elicits a hyper-inflammatory response that contributes to increased morbidity and mortality in patients with COVID-19. In the case of HIV infection, despite effective anti-retroviral therapy, ...
  • COVID-19 severity and in-hospital mortality in an area with high HIV prevalence 
    Boswell, Michael; Maimela, T.C.R. (Tshegofatso); Hameiri-Bowen, Dan; Riley, George; Malan, Albertus; Steyn, Nickietta; Nolutshungu, Nomonde; De Villiers, Talita R.; De Beer, Zelda; Mathabathe, John; Tshabalala, Khanyisile; Abdullah, Fareed; Ramlall, Rajiev; Heystek, Marthinus J.; Basu, Debashis; Rheeder, Paul; Ueckermann, Veronica; Van Hougenhouck-Tulleken, W.G. (Wesley) (AOSIS, 2023-01-27)
    BACKGROUND : HIV infection causes immune dysregulation affecting T-cell and monocyte function, which may alter coronavirus disease 2019 (COVID-19) pathophysiology. OBJECTIVES : We investigated the associations among ...
  • Decline in antibody responses to SARS-CoV-2 post-vaccination poses a risk to health care workers 
    Worsley, Catherine M.; Van der Mescht, Mieke Adri; Hoffmann, Daniel; Meyer, Pieter Willem Adriaan; Ueckermann, Veronica; Rossouw, Theresa M. (Elsevier, 2022-09)
    No abstract available.
  • Despite delayed kinetics, people living with HIV achieve equivalent antibody function after SARS-CoV-2 infection or vaccination 
    Motsoeneng, Boitumelo M.; Manamela, Nelia; Kaldine, Haajira; Kgagudi, Prudence; Hermanus, Tandile; Ayres, Frances; Makhado, Zanele; Moyo-Gwete, Thandeka; Van der Mescht, Mieke Adri; Abdullah, Fareed; Boswell, Michael; Ueckermann, Veronica; Rossouw, Theresa; Madhi, Shabir A.; Moore, Penny L.; Richardson, Simone I. (Frontiers Media, 2023-08-03)
    The kinetics of Fc-mediated functions following SARS-CoV-2 infection or vaccination in people living with HIV (PLWH) are not known. We compared SARS-CoV-2 spike-specific Fc functions, binding, and neutralization in ...
  • SARS-CoV-2 501Y.V2 escapes neutralization by South African COVID-19 donor plasma 
    Wibmer, Constantinos Kurt; Ayres, Frances; Hermanus, Tandile; Madzivhandila, Mashudu; Kgagudi, Prudence; Oosthuysen, Brent; Lambson, Bronwen E.; De Oliveira, Tulio; Vermeulen, Marion; Van der Berg, Karin; Rossouw, Theresa M.; Boswell, Michael T.; Ueckermann, Veronica; Meiring, Susan; Von Gottberg, Anne; Cohen, Cheryl; Morris, Lynn; Bhiman, Jinal N.; Moore, Penny L. (Springer, 2021-04)
    SARS-CoV-2 501Y.V2 (B.1.351), a novel lineage of coronavirus causing COVID-19, contains substitutions in two immunodominant domains of the spike protein. Here, we show that pseudovirus expressing 501Y.V2 spike protein ...
  • SARS-CoV-2 Beta and Delta variants trigger Fc effector function with increased cross-reactivity 
    Richardson, Simone I.; Manamela, Nelia P.; Motsoeneng, Boitumelo M.; Kaldine, Haajira; Ayres, Frances; Makhado, Zanele; Mennen, Mathilda; Skelem, Sango; Williams, Noleen; Sullivan, Nancy J.; Misasi, John; Gray, Glenda G.; Bekker, Linda‑Gail; Ueckermann, Veronica; Rossouw, Theresa M.; Boswell, M.T.; Ntusi, Ntobeko A.B.; Burgers, Wendy A.; Moore, Penny L. (Cell Press, 2022-02-15)
    Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants of concern (VOCs) exhibit escape from neutralizing antibodies, causing concern about vaccine effectiveness. However, while non-neutralizing cytotoxic ...
  • SARS-CoV-2 Omicron triggers cross-reactive neutralization and Fc effector functions in previously vaccinated, but not unvaccinated, individuals 
    Richardson, Simone I.; Madzorera, Tatenda; Spencer, Holly; Manamela, Nelia P.; Van der Mescht, Mieke Adri; Lambson, Bronwen E.; Oosthuysen, Brent; Ayres, Frances; Makhado, Zanele; Moyo-Gwete, Thandeka; Mzindle, Nonkululeko; Motlou, Thopisang; Strydom, Amy; Mendes, Adriano; Tegally, Houriiyah; De Beer, Zelda; De Villiers, Talita Roma; Bodenstein, Annie; Van den Berg, Gretha; Venter, Marietjie; De Oliviera, Tulio; Ueckermann, Veronica; Rossouw, Theresa M.; Boswell, M.T.; Moore, Penny L. (Cell Press, 2022-03-24)
    The SARS-CoV-2 Omicron variant escapes neutralizing antibodies elicited by vaccines or infection. However, whether Omicron triggers cross-reactive humoral responses to other variants of concern (VOCs) remains unknown. We ...
  • Shared N417-dependent epitope on the SARS-CoV-2 Omicron, Beta, and Delta Plus variants 
    Moyo-Gwete, Thandeka; Madzivhandila, Mashudu; Mkhize, Nonhlanhla N.; Kgagudi, Prudence; Ayres, Frances; Lambson, Bronwen E.; Manamela, Nelia P.; Richardson, Simone, I.; Makhado, Zanele; Van der Mescht, Mieke Adri; De Beer, Zelda; De Villiers, Talita Roma; Burgers, Wendy A.; Ntusi, Ntobeko A.B.; Rossouw, Theresa M.; Ueckermann, Veronica; Boswell, Michael T.; Moore, Penny L. (American Society for Microbiology, 2022-07)
    As severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to evolve, several variants of concern (VOCs) have arisen which are defined by multiple mutations in their spike proteins. These VOCs have shown ...
  • T cell responses to SARS-CoV-2 spike cross-recognize Omicron 
    Keeton, Roanne; Tincho, Marius B.; Ngomti, Amkele; Baguma, Richard; Benede, Ntombi; Suzuki, Akiko; Khan, Khadija; Cele, Sandile; Bernstein, Mallory; Karim, Farina; Madzorera, Sharon V.; Moyo-Gwete, Thandeka; Mennen, Mathilda; Skelem, Sango; Adriaanse, Marguerite; Mutithu, Daniel; Aremu, Olukayode; Stek, Cari; Du Bruyn, Elsa; Van der Mescht, Mieke Adri; De Beer, Zelda; De Villiers, Talita R.; Bodenstein, Annie; Van den Berg, Gretha; Mendes, Adriano; Strydom, Amy; Venter, Marietjie; Giandhari, Jennifer; Naidoo, Yeshnee; Pillay, Sureshnee; Tegally, Houriiyah; Grifoni, Alba; Weiskopf, Daniela; Sette, Alessandro; Wilkinson, Robert J.; De Oliveira, Tulio; Bekker, Linda‑Gail; Gray, Glenda; Ueckermann, Veronica; Rossouw, Theresa; Boswell, M.T.; Bhiman, Jinal N.; Moore, Penny L.; Sigal, Alex; Ntusi, Ntobeko A.B.; Burgers, Wendy A.; Riou, Catherine (Nature Research, 2022-03-17)
    The SARS-CoV-2 Omicron variant (B.1.1.529) has multiple spike protein mutations1,2 that contribute to viral escape from antibody neutralization3–6 and reduce vaccine protection from infection7,8. The extent to which other ...