Browsing Health Sciences by UP Author "Pretorius, Marthi Andréa"

Browsing Health Sciences by UP Author "Pretorius, Marthi Andréa"

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  • 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 ...
  • Enterovirus D68 and other enterovirus serotypes identified in South African patients with severe acute respiratory illness, 2009-2011 
    Hellferscee, Orienka; Treurnicht, Florette K.; Tempia, Stefano; Variava, Ebrahim; Dawood, Halima; Kahn, Kathleen; Cohen, Adam L.; Pretorius, Marthi Andréa; Cohen, Cheryl; Madhi, Shabir A.; Venter, Marietjie (Wiley Open Access, 2017-04)
    BACKGROUND : Human enteroviruses (EV) have been associated with severe acute respiratory illness (SARI) in South Africa. OBJECTIVES : We aimed to describe the molecular epidemiology of EV serotypes among patients ...
  • Epidemiology of acute lower respiratory tract infection in HIV exposed uninfected infants 
    Cohen, Cheryl; Moyes, Jocelyn; Tempia, Stefano; Groome, Michelle; Walaza, Sibongile; Pretorius, Marthi Andréa; Naby, Fathima; Mekgoe, Omphile; Kahn, Kathleen; Von Gottberg, Anne; Wolter, Nicole; Cohen, Adam L.; Von Mollendorf, Claire; Venter, Marietjie; Madhi, Shabir A. (American Academy of Pediatrics, 2016-04)
    BACKGROUND : Increased morbidity and mortality from lower respiratory tract infection (LRTI) abstract has been suggested in HIV-exposed uninfected (HEU) children; however, the contribution of respiratory viruses is ...
  • Epidemiology of influenza virus types and subtypes in South Africa, 2009-2012 
    Cohen, Adam L.; Hellferscee, Orienka; Pretorius, Marthi Andréa; Treurnicht, Florette K.; Walaza, Sibongile; Madhi, Shabir A.; Groome, Michelle; Dawood, Halima; Variava, Ebrahim; Kahn, Kathleen; Wolter, Nicole; Von Gottberg, Anne; Tempia, Stefano; Venter, Marietjie; Cohen, Cheryl (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2014-07)
    To determine clinical and epidemiologic differences between influenza caused by different virus types and subtypes, we identified patients and tested specimens. Patients were children and adults hospitalized with confirmed ...
  • Epidemiology of severe acute respiratory illness (SARI) among adults and children aged 5 years in a high HIV-prevalence Setting, 2009–2012 
    Cohen, Cheryl; Walaza, Sibongile; Moyes, Jocelyn; Groome, Michelle; Tempia, Stefano; Pretorius, Marthi Andréa; Hellferscee, Orienka; Dawood, Halima; Haffejee, Summaya; Variava, Ebrahim; Kahn, Kathleen; Tshangela, Akhona; Von Gottberg, Anne; Wolter, Nicole; Cohen, Adam L.; Kgokong, Babatyi; Venter, Marietjie; Madhi, Shabir A. (Public Library of Science, 2015-02-23)
    OBJECTIVE There are few published studies describing severe acute respiratory illness (SARI) epidemiology amongst older children and adults from high HIV-prevalence settings. We aimed to describe SARI epidemiology amongst ...
  • Epidemiology of viral-associated acute lower respiratory tract infection among children < 5 years of age in a high HIV prevalence setting, South Africa, 2009-2012 
    Cohen, Cheryl; Walaza, Sibongile; Moyes, Jocelyn; Groome, Michelle; Tempia, Stefano; Pretorius, Marthi Andréa; Hellferscee, Orienka; Dawood, Halima; Chhagan, Meera; Naby, Fathima; Haffejee, Summaya; Variava, Ebrahim; Kahn, Kathleen; Nzenze, Susan; Tshangela, Akhona; Von Gottberg, Anne; Wolter, Nicole; Cohen, Adam L.; Kgokong, Babatyi; Venter, Marietjie; Madhi, Shabir A. (Lippincott Williams and Wilkins, 2015-01)
    BACKGROUND : Data on the epidemiology of viral-associated acute lower respiratory tract infection (LRTI) from high HIV prevalence settings are limited. We aimed to describe LRTI hospitalizations among South African children ...
  • Evolutionary dynamics of 2009 pandemic influenza A virus subtype H1N1 in South Africa during 2009–2010 
    Venter, Marietjie; Naidoo, Dhamari; Pretorius, Marthi Andréa; Buys, Amelia; McAnerney, Johanna M.; Blumberg, Lucille Hellen; Madhi, Shabir A.; Cohen, Cheryl; Schoub, Barry D. (Oxford University Press, 2012-12)
    BACKGROUND: 2009 Pandemic Influenza A(H1N1) was first detected in June 2009 in South Africa and later resulted in extensive transmission throughout Africa. Established routine surveillance programmes and collaboration ...
  • Genetic diversity and molecular epidemiology of human rhinoviruses in South Africa 
    Pretorius, Marthi Andréa; Tempia, Stefano; Treurnicht, Florette K.; Walaza, Sibongile; Cohen, Adam L.; Moyes, Jocelyn; Hellferscee, Orienka; Variava, Ebrahim; Dawood, Halima; Chhagan, Meera; Haffejee, Summaya; Madhi, Shabir A.; Cohen, Cheryl; Venter, Marietjie (Wiley, 2014-07-03)
    BACKGROUND Rhinoviruses (RV) are a well-established cause of respiratory illness. RV-C has been associated with more severe illness. We aimed to characterize and compare the clinical presentations and disease severity ...
  • HIV and influenza infection are associated with increased blood pneumococcal load : a prospective, hospital-based observational study in South Africa, 2009–2011 
    Wolter, Nicole; Cohen, Cheryl; Tempia, Stefano; Madhi, Shabir A.; Venter, Marietjie; Moyes, Jocelyn; Walaza, Sibongile; Kgokong, Babatyi; Groome, Michelle; Du Plessis, Mignon; Pretorius, Marthi Andréa; Dawood, Halima; Kahn, Kathleen; Variava, Ebrahim; Klugman, Keith P.; Von Gottberg, Anne (Oxford University Press, 2014-01)
    BACKGROUND : Increased pneumococcal loads are associated with severe outcomes. We determined the prevalence of pneumococcal DNA in blood specimens from patients hospitalized with acute lower respiratory tract infection and ...
  • Influenza virus infection is associated with increased risk of death amongst patients hospitalized with confirmed pulmonary tuberculollsis in South Africa, 2010-2011 
    Walaza, Sibongile; Tempia, Stefano; Dawood, Halima; Variava, Ebrahim; Moyes, Jocelyn; Cohen, Adam L.; Wolter, Nicole; Groome, Michelle; Von Mollendorf, Claire; Kahn, Kathleen; Pretorius, Marthi Andréa; Venter, Marietjie; Madhi, Shabir A.; Cohen, Cheryl (BioMed Central, 2015-01)
    BACKGROUND : Data on the association between influenza and tuberculosis are limited. We describe the characteristics of patients with laboratory-confirmed tuberculosis, laboratory-confirmed influenza and tuberculosis-influenza ...
  • Mortality in children aged <5 years with severe acute respiratory illness in a high HIV-prevalence urban and rural areas of South Africa, 2009–2013 
    Ayeni, Oluwatosin A.; Walaza, Sibongile; Tempia, Stefano; Groome, Michelle; Kahn, Kathleen; Madhi, Shabir A.; Cohen, Adam L.; Moyes, Jocelyn; Venter, Marietjie; Pretorius, Marthi; Treurnicht, Florette; Hellferscee, Orienka; Von Gottberg, Anne; Wolter, Nicole; Cohen, Cheryl (Public Library of Science, 2021-08)
    BACKGROUND: Severe acute respiratory illness (SARI) is an important cause of mortality in young children, especially in children living with HIV infection. Disparities in SARI death in children aged <5 years exist in urban ...
  • Respiratory viral coinfections identified by a 10-plex real-time reverse-transcription polymerase chain reaction assay in patients hospitalized with severe acute respiratory iIllness, South Africa, 2009–2010 
    Pretorius, Marthi Andréa; Madhi, Shabir A.; Cohen, Cheryl; Naidoo, Dhamari; Groome, Michelle; Moyes, Jocelyn; Buys, Amelia; Walaza, Sibongile; Dawood, Halima; Chhagan, Meera; Haffejee, Summaya; Kahn, Kathleen; Puren, Adrian; Venter, Marietjie (Oxford University Press, 2012)
    BACKGROUND: Data about respiratory co-infections of Influenza A H1N1 during the pandemic in Africa are limited. We used an existing surveillance programme for severe acute respiratory illness (SARI) to evaluate a new ...
  • Risk factors for influenza-associated severe acute respiratory illness hospitalization in South Africa, 2012–2015 
    Tempia, Stefano; Walaza, Sibongile; Moyes, Jocelyn; Cohen, Adam L.; Von Mollendorf, Claire; Treurnicht, Florette K.; Venter, Marietjie; Pretorius, Marthi Andréa; Hellferscee, Orienka; Mtshali, Senzo; Seleka, Mpho; Tshangela, Akhona; Nguweneza, Athermon; McAnerney, Johanna M.; Wolter, Nicole; Von Gottberg, Anne; Dawood, Halima; Variava, Ebrahim; Madhi, Shabir A.; Cohen, Cheryl (Oxford University Press, 2017)
    BACKGROUND : Data on risk factors for influenza-associated hospitalizations in low- and middle-income countries are limited. METHODS : We conducted active syndromic surveillance for hospitalized severe acute respiratory ...
  • Severe influenza-associated respiratory infection in high HIV prevalence setting, South Africa, 2009-2011 
    Cohen, Cheryl; Moyes, Jocelyn; Tempia, Stefano; Groome, Michelle; Walaza, Sibongile; Pretorius, Marthi Andréa; Dawood, Halima; Chhagan, Meera; Haffejee, Summaya; Variava, Ebrahim; Kahn, Kathleen; Tshangela, Akhona; Von Gottberg, Anne; Wolter, Nicole; Cohen, Adam L.; Kgokong, Babatyi; Venter, Marietjie; Madhi, Shabir A. (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2013-11)
    Data on influenza epidemiology in HIV-infected persons are limited, particularly for sub-Saharan Africa, where HIV infection is widespread. We tested respiratory and blood samples from patients with acute lower respiratory ...
  • Sindbis and Middelburg old world alphaviruses associated with disease in horses, South Africa 
    Van Niekerk, Stephanie; Human, Stacey; Williams, June Heather; Van Wilpe, Erna; Pretorius, Marthi Andréa; Swanepoel, Robert; Venter, Marietjie (Centers for Disease Control & Prevention, 2015-12)
    Old World alphaviruses were identified in 52 of 623 horses with febrile or neurologic disease in South Africa. Five of 8 Sindbis virus infections were mild; 2 of 3 fatal cases involved co-infections. Of 44 Middelburg ...
  • West Nile virus lineage 2 in horses and other animals with neurologic disease, South Africa, 2008-2015 
    Venter, Marietjie; Pretorius, Marthi Andréa; Fuller, James A.; Botha, Elizabeth; Rakgotho, Mpho; Stivaktas, Voula; Weyer, Camilla Theresa; Romito, Marco; Williams, June Heather (Centers for Disease Control and Prevention, 2017-12)
    During 2008–2015 in South Africa, we conducted West Nile virus surveillance in 1,407 animals with neurologic disease and identified mostly lineage 2 cases in horses (7.4%, 79/1,069), livestock (1.5%, 2/132), and wildlife ...