Browsing by UP Author "Wolfaardt, Marianne"

Browsing by UP Author "Wolfaardt, Marianne"

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  • Detection of potentially pathogenic enteric viruses in environmental samples from Kenya using the bag-mediated filtration system 
    Van Zyl, Walda B.; Zhou, Nicolette A.; Wolfaardt, Marianne; Matsapola, P.N. (Peter); Ngwana, F.B. (Fhatuwani); Symonds, Erin M.; Fagnant-Sperati, Christine S.; Shirai, Jeffry H.; Kossik, Alexandra L.; Beck, Nicola K.; Komen, Evans; Mwangi, Benlick; Nyangao, James; Boyle, David S.; Borus, Peter; Taylor, Maureen B.; Meschke, J. Scott (IWA Publishing, 2019-09)
    Enteric virus environmental surveillance via a highly sensitive method is critical, as many enteric viruses have low infectious doses and can persist in the environment for extended periods. This study determined the ...
  • Evidence of a recombinant wild-type human astrovirus strain from a Kenyan child with gastroenteritis 
    Wolfaardt, Marianne; Kiulia, Nicholas M.; Mwenda, Jason M.; Taylor, Maureen B. (Springer, 2011-02)
    A human astrovirus (HAstV) strain from Kenya was characterized by nucleotide sequence analysis. Sequences from open reading frame 1a (ORF1a) clustered with genotype 6/7, those from ORF1b clustered with genotype 3, and ...
  • Feasibility of the bag-mediated filtration system for environmental surveillance of poliovirus in Kenya 
    Zhou, Nicolette A.; Fagnant-Sperati, Christine S.; Komen, Evans; Mwangi, Benlick; Mukubi, Johnstone; Nyangao, James; Hassan, Joanne; Chepkurui, Agnes; Maina, Caroline; Van Zyl, Walda B.; Matsapola, P.N. (Peter); Wolfaardt, Marianne; Ngwana, F.B. (Fhatuwani); Jeffries-Miles, Stacey; Coulliette-Salmond, Angela; Penaranda, Silvia; Shirai, Jeffry H.; Kossik, Alexandra L.; Beck, Nicola K.; Wilmouth, Robyn; Boyle, David S.; Burns, Cara C.; Taylor, Maureen B.; Borus, Peter; Meschke, John Scott (Springer, 2020-03)
    The bag-mediated filtration system (BMFS) was developed to facilitate poliovirus (PV) environmental surveillance, a supplement to acute flaccid paralysis surveillance in PV eradication efforts. From April to September 2015, ...
  • Genetic determinants of virulence in pathogenic lineage 2 West Nile virus strains 
    Botha, Elizabeth Magdelena; Markotter, Wanda; Wolfaardt, Marianne; Paweska, Janusz Tadeusz; Swanepoel, Robert; Palacios, Gustavo; Nel, Louis Hendrik; Venter, Marietjie (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2008-02)
    We determined complete genome sequences of lineage 2 West Nile virus (WNV) strains isolated from patients in South Africa who had mild or severe WNV infections. These strains had previously been shown to produce either ...
  • Molecular characterisation of enteroviruses and clinical findings from a cluster of paediatric viral meningitis cases in Tshwane, South Africa 2010-2011 
    Wolfaardt, Marianne; Buchner, Ane; Myburgh, Marcelle; Avenant, Theunis Johannes; Du Plessis, Nicolette Marie; Taylor, Maureen B. (Elsevier, 2014-11)
    BACKGROUND : Human enteroviruses (HEVs) are the most common viral pathogen associated with paediatricaseptic meningitis. From October 2010 to February 2011 a cluster of HEV-associated meningitis caseswas identified in ...
  • Molecular characterisation of hepatitis : a virus strains from water sources in South Africa 
    Said, R.; Wolfaardt, Marianne; Taylor, Maureen B. (IWA Publishing, 2014-03)
    Hepatitis A virus (HAV) strains found in selected South African (SA) surface waters were characterised to establish what HAV types are circulating in the environment, thus reflecting circulation in the surrounding ...
  • Molecular detection and characterisation of mumps virus in cerebrospinal fluid in a Gauteng laboratory 
    Brauer, Marieke; Wolfaardt, Marianne; Webber, Lynne M.; Taylor, Maureen B. (Medpharm Publications, NISC (Pty) Ltd and Cogent, Taylor & Francis Group, 2016)
    The study aimed to determine the presence of mumps virus (MuV) in cerebrospinal fluid (CSF) specimens and to genetically characterise detected MuV strains. A real-time reverse transcription-polymerase chain reaction ...
  • Rotavirus G and P types circulating in the eastern region of Kenya : predominance of G9 and emergence of G12 genotypes 
    Kiulia, Nicholas M.; Nyaga, Martin M.; Seheri, Mapaseka L.; Wolfaardt, Marianne; Van Zyl, Walda B.; Esona, Mathew D.; Irimu, Grace; Inoti, Murithi; Gatinu, Bernard W.; Njenga, Peter K.; Taylor, Maureen B.; Nyachieo, Atunga (Lippincott, Williams & Wilkins, 2014)
    BACKGROUND: The World Health Organization has recommended that rotavirus (RV) vaccines be included in all national immunization programs as part of a strategy to control RV-associated diarrheal diseases. Hospital-based ...
  • Validation of the bag-mediated filtration system for environmental surveillance of poliovirus in Nairobi, Kenya 
    Fagnant-Sperati, C.S.; Ren, Y.; Zhou, N.A.; Komen, E.; Mwangi, B.; Hassan, J.; Chepkurui, A.; Nzunza, R.; Nyangao, J.; Van Zyl, Walda B.; Wolfaardt, Marianne; Matsapola, P.N. (Peter); Ngwana, F.B. (Fhatuwani); Jeffries-Miles, S.; Coulliette-Salmond, A.; Pe~naranda, S.; Vega, E.; Shirai, J.H.; Kossik, A.L.; Beck, N.K.; Boyle, D.S.; Burns, C.C.; Taylor, M.B.; Borus, P.; Meschke, J.S. (Wiley, 2021-03)
    AIMS : This study compared the bag-mediated filtration system (BMFS) and standard WHO two-phase separation methods for poliovirus (PV) environmental surveillance, examined factors impacting PV detection and monitored ...