Browsing Research Articles (Medical Virology) by UP Author "Venter, Marietjie"

Browsing Research Articles (Medical Virology) by UP Author "Venter, Marietjie"

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  • Aedes species (Diptera: Culicidae) ecological and host feeding patterns in the north-eastern parts of South Africa, 2014–2018 
    Guarido, Milehna M.; Riddin, Megan A.; Johnson, Todd; Braack, L.E.O.; Schrama, M.; Gorsich, E.E.; Brooke, B.D.; Almeida, Antonio Paulo Gouveia; Venter, Marietjie (BMC, 2021-06)
    BACKGROUND: There is a paucity of recent data and knowledge on mosquito diversity and potential vectors of arboviruses in South Africa, with most of the available data dating back to the 1950s–1970s. Aedes and Culex species ...
  • The African network for improved diagnostics, epidemiology and management of common infectious agents 
    Schubert, Grit; Achi, Vincent; Ahuka, Steve; Belarbi, Essia; Bourhaima, Ouattara; Eckmanns, Tim; Johnstone, Siobhan L.; Kabore, Firmin; Kra, Ouffoue; Mendes, Adriano; Ouedraogo, Abdoul-Salam; Poda, Armel; Some, Arsene Satouro; Tomczyk, Sara; Couacy-Hymann, Emmanuel; Kayembe, Jean-Marie; Meda, Nicolas; Tamfum, Jean-Jacques Muyembe; Ouangraoua, Soumeya; Page, Nicola Anne; Venter, Marietjie; Leendertz, Fabian H.; Akoua-Koffi, Chantal (BioMed Central, 2021-06-07)
    BACKGROUND : In sub-Saharan Africa, acute respiratory infections (ARI), acute gastrointestinal infections (GI) and acute febrile disease of unknown cause (AFDUC) have a large disease burden, especially among children, ...
  • Assessing the impact of pneumococcal conjugate vaccines on invasive pneumococcal disease using polymerase chain reaction-based surveillance : an experience from South Africa 
    Tempia, Stefano; Wolter, Nicole; Cohen, Cheryl; Walaza, Sibongile; Von Mollendorf, Claire; Cohen, Adam L.; Moyes, Jocelyn; De Gouveia, Linda; Nzenze, Susan; Treurnicht, Florette; Venter, Marietjie; Groome, Michelle J.; Madhi, Shabir A.; Von Gottberg, Anne (BioMed Central, 2015-10-26)
    BACKGROUND : The use of molecular diagnostic techniques for the evaluation of the impact of pneumococcal conjugate vaccines (PCVs) has not been documented. We aimed to evaluate the impact of PCVs on invasive pneumococcal ...
  • Assessing the zoonotic potential of arboviruses of African origin 
    Venter, Marietjie (Elsevier, 2018-02)
    Several African arboviruses have emerged over the past decade in new regions where they caused major outbreaks in humans and/or animals including West Nile virus, Chikungunya virus and Zika virus. This raise questions ...
  • Attributable fraction of influenza virus detection to mild and severe respiratory illnesses in HIV-Infected and HIV-uninfected patients, South Africa, 2012–2016 
    Tempia, Stefano; Walaza, Sibongile; Moyes, Jocelyn; Cohen, Adam L.; Von Mollendorf, Claire; McMorrow, Meredith L.; Treurnicht, Florette K.; Venter, Marietjie; Pretorius, Marthi Andréa; Hellferscee, Orienka; Wolter, Nicole; Von Gottberg, Anne; Nguweneza, Athermon; McAnerney, Johanna M.; Dawood, Halima; Variava, Ebrahim; Madhi, Shabir A.; Cohen, Cheryl (Centers for Disease Control and Prevention, 2017-07)
    The attributable fraction (AF) of influenza virus detection to illness has not been described for patients in different age groups or with different HIV infection statuses. We compared the age group–specific prevalence of ...
  • Bagaza virus in Himalayan monal pheasants, South Africa, 2016–2017 
    Steyn, Jumari; Botha, Elizabeth; Lourens, Carina W.; Coetzer, Jacobus A.W.; Venter, Marietjie (Centers for Disease Control and Prevention, 2019-12)
    Bagaza virus (BAGV) has not been reported in birds in South Africa since 1978. We used phylogenetic analysis and electron microscopy to identify BAGV as the likely etiology in neurologic disease and death in Himalayan monal ...
  • Changes in prevalence and seasonality of pathogens identified in acute respiratory tract infections in hospitalised individuals in rural and urban settings in South Africa; 2018–2022 
    Davids, Michaela; Johnstone, Siobhan; Mendes, Adriano; Brecht, Gadean; Avenant, Theunis Johannes; Du Plessis, Nicolette Marie; De Villiers, Maryke; Page, N.A. (Nicola); Venter, Marietjie (MDPI, 2024-03)
    Severe acute respiratory tract infections (SARIs) has been well described in South Africa with seasonal patterns described for influenza and respiratory syncytial virus (RSV), while others occur year-round (rhinovirus and ...
  • A comparative assessment of adult mosquito trapping methods to estimate spatial patterns of abundance and community composition in southern Africa 
    Gorsich, Erin E.; Beechler, Brianna R.; Van Bodegom, Peter M.; Govender, Danny; Guarido, Milehna M.; Venter, Marietjie; Schrama, Maarten (BioMed Central, 2019-10-02)
    BACKGROUND : Assessing adult mosquito populations is an important component of disease surveillance programs and ecosystem health assessments. Inference from adult trapping datasets involves comparing populations across space ...
  • Comparative morphological and molecular analysis confirms the presence of the West Nile virus mosquito vector, Culex univittatus, in the Iberian Peninsula 
    Mixao, Verónica; Barriga, Daniel Bravo; Parreira, Ricardo; Novo, Maria Teresa; Sousa, Carla Alexandra; Frontera, Eva; Venter, Marietjie; Braack, L.E.O.; Almeida, Antonio Paulo Gouveia (BioMed Central, 2016-11-25)
    BACKGROUND : Culex univittatus and Culex perexiguus mosquitoes (Diptera: Culicidae) are competent arbovirus vectors, but with unclear morphological differentiation. In Europe, and in the Iberian Peninsula in particular, ...
  • Comparative pathology of neurovirulent lineage 1 (NY99/385) and lineage 2 (SPU93/01) West Nile virus Infections in BALBc mice 
    Williams, June Heather; Mentoor, Juliet Lewie Dionee; Van Wilpe, Erna; Venter, Marietjie (Sage, 2015-01)
    The pathology in mice infected with neurovirulent South African lineage 2 West Nile virus (WNV) strains has not previously been described. Three- to 4-month-old male BALBc mice were infected with South African neurovirulent ...
  • Confirmation of an association between single nucleotide polymorphisms in the VDR gene with respiratory syncytial virus related disease in South African children 
    Kresfelder, T.L.; Janssen, R.; Bont, L.; Venter, Marietjie (Wiley, 2011-10)
    Respiratory syncytial virus is a leading cause of lower respiratory tract infection in infants. Disease severity has been linked to host immune responses and polymorphisms in genes associated with innate immunity. A ...
  • Deaths associated with respiratory syncytial and influenza viruses among persons greater or equal to 5 years of age in HIV- prevalent area, South Africa, 1998 - 2009 
    Tempia, Stefano; Walaza, Sibongile; Vibound, Cecile; Cohen, Adam L.; Madhi, Shabir A.; Venter, Marietjie; Von Mollendorf, Claire; Moyes, Jocelyn; McAnerney, Johanna M.; Cohen, Cheryl (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2015-04)
    We estimated deaths attributable to influenza and respiratory syncytial virus (RSV) among persons >5 years of age in South Africa during 1998–2009 by applying regression models to monthly deaths and laboratory surveillance ...
  • Detection of insect-specific flaviviruses in mosquitoes (Diptera: Culicidae) in northeastern regions of South Africa 
    Guarido, Milehna M.; Govender, Kamini; Riddin, Megan A.; Schrama, Maarten; Gorsich, Erin E.; Brooke, Basil D.; Almeida, Antonio Paulo Gouveia; Venter, Marietjie (MDPI, 2021-10)
    Mosquitoes in the Aedes and Culex genera are considered the main vectors of pathogenic flaviviruses worldwide. Entomological surveillance using universal flavivirus sets of primers in mosquitoes can detect not only ...
  • Determining the provincial and national burden of influenza-associated severe acute respiratory illness in South Africa using a rapid assessment methodology 
    Murray, Jillian; Cohen, Adam L.; Walaza, Sibongile; Groome, Michelle; Madho, Shabir A.; Variava, Ebrahim; Kahn, Kathleen; Dawood, Halima; Tempia, Stefano; Tshangela, Akhona; Venter, Marietjie; Feikin, Daniel R.; Cohen, Cheryl; Chowell, Gerardo (Public Library of Science, 2015-07-08)
    Local disease burden data are necessary to set national influenza vaccination policy. In 2010 the population of South Africa was 50 million and the HIV prevalence was 11%. We used a previously developed methodology to ...
  • Development of a respiratory severity score for hospitalized adults in a high HIV-prevalence setting—South Africa, 2010-2011 
    Millman, Alexander J.; Greenbaum, Adena; Walaza, Sibongile; Cohen, Adam L.; Groome, Michelle J.; Reed, Carrie; McMorrow, Meredith; Tempia, Stefano; Venter, Marietjie; Treurnicht, Florette K.; Madhi, Shabir A.; Cohen, Cheryl; Variava, Ebrahim (BioMed Central, 2017-02-02)
    BACKGROUND : Acute lower respiratory tract infections (LRTI) are a frequent cause of hospitalization and mortality in South Africa; however, existing respiratory severity scores may underestimate mortality risk in ...
  • Distribution of influenza virus types by age using case-based global surveillance data from twenty-nine countries, 1999-2014 
    Caini, Saverio; Spreeuwenberg, Peter; Kusznierz, Gabriela F.; Rudi, Juan Manuel; Owen, Rhonda; Pennington, Kate; Wangchuk, Sonam; Gyeltshen, Sonam; Ferreira de Almeida, Walquiria Aparecida; Henriques, Claudio Maierovitch Pessanha; Njouom, Richard; Vernet, Marie-Astrid; Fasce, Rodrigo A.; de Mora, Domenica; De Lozano, Celina; Zambon, Maria; Pebody, Richard; Castillo, Leticia; Clara, Alexey W.; Matute, Maria Luisa; Kosasih, Herman; Nurhayati; Puzelli, Simona; Rizzo, Caterina; Kadjo, Herve A.; Daouda, Coulibaly; Kiyanbekova, Lyazzat; Ospanova, Akerke; Mott, Joshua A.; Emukule, Gideon O.; Heraud, Jean-Michel; Razanajatovo, Norosoa Harline; Barakat, Amal; El Falaki, Fatima; Huang, Sue Q.; Lopez, Liza; Balmaseda, Angel; Moreno, Brechla; Rodrigues, Ana Paula; Guiomar, Raquel; Ang, Li Wei; Lee, Vernon Jian Ming; Venter, Marietjie; Cohen, Cheryl; Badur, Selim; Ciblak, Meral A.; Mironenko, Alla; Holubka, Olha; Bresee, Joseph; Brammer, Lynnette; Hoang, Phuong Vu Mai; Quynh Le, Mai Thi; Fleming, Douglas; Seblain, Clotilde El-Guerche; Schellevis, François; Paget, John; Global Influenza B Study group (BioMed Central, 2018-06-08)
    BACKGROUND : Influenza disease burden varies by age and this has important public health implications. We compared the proportional distribution of different influenza virus types within age strata using surveillance ...
  • Effectiveness and knowledge, attitudes and practices of seasonal influenza vaccine in primary healthcare settings in South Africa, 2010-2013 
    McAnerney, Johanna M.; Walaza, Sibongile; Cohen, Adam L.; Tempia, Stefano; Buys, Amelia; Venter, Marietjie; Blumberg, Lucille Hellen; Duque, Jazmin; Cohen, Cheryl (Wiley, 2015-10)
    OBJECTIVES : Influenza vaccine effectiveness (VE) and coverage data for sub-Saharan Africa are scarce. Using a test-negative case–control design, we estimated influenza VE annually among individuals with influenza-like ...
  • 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 
    Tempia, Stefano; Walaza, Sibongile; Moyes, Jocelyn; Cohen, Adam L.; Von Mollendorf, Claire; McMorrow, Meredith L.; Mhlanga, Sarona; Treurnicht, Florette K.; Venter, Marietjie; Pretorius, Marthi A.; Hellferscee, Orienka; Wolter, Nicole; Von Gottberg, Anne; Nguweneza, Arthemon; McAnerney, Johanna M.; Dawood, Halima; Variava, Ebrahim; Madhi, Shabir A.; Cohen, Cheryl (Wiley Open Access, 2018-05)
    BACKGROUND : The attributable fraction of influenza virus detection to illness (INF-AF) and the duration of symptoms as a surveillance inclusion criterion could potentially have substantial effects on influenza disease ...
  • Emergence and phenotypic characterization of the global SARS-CoV-2 C.1.2 lineage 
    Scheepers, Cathrine; Everatt, Josie; Amoako, Daniel G.; Tegally, Houriiyah; Wibmer, Constantinos Kurt; Mnguni, Anele; Ismail, Arshad; Mahlangu, Boitshoko; Lambson, Bronwen E.; Martin, Darren P.; Wilkinson, Eduan; San, James Emmanuel; Giandhari, Jennifer; Manamela, Nelia; Ntuli, Noxolo; Kgagudi, Prudence; Cele, Sandile; Richardson, Simone I.; Pillay, Sureshnee; Mohale, Thabo; Ramphal, Upasana; Naidoo, Yeshnee; Khumalo, Zamantungwa Thobeka Happiness; Kwatra, Gaurav; Gray, Glenda; Bekker, Linda‑Gail; Madhi, Shabir A.; Baillie, Vicky; Van Voorhis, Wesley C.; Treurnicht, Florette K.; Venter, Marietjie; Mlisana, Koleka; Wolter, Nicole; Sigal, Alex; Williamson, Carolyn; Hsiao, Nei-yuan; Msomi, Nokukhanya; Maponga, Tongai; Preiser, Wolfgang; Makatini, Zinhle; Lessells, Richard; Moore, Penny L.; De Oliveira, Tulio; Von Gottberg, Anne; Bhiman, Jinal N. (Nature Research, 2022-04-08)
    Global genomic surveillance of SARS-CoV-2 has identified variants associated with increased transmissibility, neutralization resistance and disease severity. Here we report the emergence of the PANGO lineage C.1.2, ...
  • Emergence of SARS-CoV-2 Omicron lineages BA.4 and BA.5 in South Africa 
    Tegally, Houriiyah; Moir, Monika; Everatt, Josie; Giovanetti, Marta; Scheepers, Cathrine; Wilkinson, Eduan; Subramoney, Kathleen; Makatini, Zinhle; Moyo, Sikhulile; Amoako, Daniel G.; Baxter, Cheryl; Althaus, Christian L.; Anyaneji, Ugochukwu J.; Kekana, Dikeledi; Viana, Raquel; Giandhari, Jennifer; Lessells, Richard; Maponga, Tongai; Maruapula, Dorcas; Choga, Wonderful; Matshaba, Mogomotsi; Mbulawa, Mpaphi B.; Msomi, Nokukhanya; NGS-SA consortium; Naidoo, Yeshnee; Pillay, Sureshnee; Sanko, Tomasz Janusz; San, James E.; Scott, Lesley; Singh, Lavanya; Magini, Nonkululeko A.; Smith-Lawrence, Pamela; Stevens, Wendy; Dor, Graeme; Tshiabuila, Derek; Wolter, Nicole; Preiser, Wolfgang; Treurnicht, Florette K.; Venter, Marietjie; Chiloane, Georginah; McIntyre, Caitlyn; O’Toole, Aine; Ruis, Christopher; Peacock, Thomas P.; Roemer, Cornelius; Pond, Sergei L. Kosakovsky; Williamson, Carolyn; Pybus, Oliver G.; Bhiman, Jinal N.; Glass, Allison; Martin, Darren P.; Jackson, Ben; Rambaut, Andrew; Laguda-Akingba, Oluwakemi; Gaseitsiwe, Simani; Von Gottberg, Anne; De Oliveira, Tulio; Bester, Armand Phillip; Claassen, Mathilda; Doolabh, Deelan; Mudau, Innocent; Mbhele, Nokuzola; Engelbrecht, Susan; Goedhals, Dominique; Hardie, Diana; Hsiao, Nei-Yuan; Iranzadeh, Arash; Ismail, Arshad; Joseph, Rageema; Maharaj, Arisha; Mahlangu, Boitshoko; Mahlakwane, Kamela; Davis, Ashlyn; Marais, Gert; Mlisana, Koleka; Mnguni, Anele; Mohale, Thabo; Motsatsi, Gerald; Mwangi, Peter; Ntuli, Noxolo; Nyaga, Martin; Olubayo, Luicer; Radibe, Botshelo; Ramphal, Yajna; Ramphal, Upasana; Strasheim, Wilhelmina; Tebeila, Naume; Van Wyk, Stephanie; Wilson, Shannon; Lucaci, Alexander G.; Weaver, Steven; Maharaj, Akhil; Pillay, Yusasha; Davids, Michaela; Mendes, Adriano; Mayaphi, Simnikiwe (Nature Research, 2022-09)
    Three lineages (BA.1, BA.2 and BA.3) of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant of concern predominantly drove South Africa’s fourth Coronavirus Disease 2019 (COVID-19) wave. We ...