| Breakthrough infections with SARS-CoV-2 omicron despite mRNA vaccine booster dose C Kuhlmann, CK Mayer, M Claassen, T Maponga, WA Burgers, R Keeton, ... The Lancet 399 (10325), 625-626, 2022 | 312 | 2022 |
| Trends in genotypic HIV-1 antiretroviral resistance between 2006 and 2012 in South African patients receiving first-and second-line antiretroviral treatment regimens GU Van Zyl, TF Liu, M Claassen, S Engelbrecht, T De Oliveira, W Preiser, ... PloS one 8 (6), e67188, 2013 | 83 | 2013 |
| Antiretroviral resistance patterns and factors associated with resistance in adult patients failing NNRTI‐based regimens in the western cape, South Africa GU van Zyl, L van der Merwe, M Claassen, M Zeier, W Preiser Journal of medical virology 83 (10), 1764-1769, 2011 | 58 | 2011 |
| Protease inhibitor resistance in South African children with virologic failure GU van Zyl, L van der Merwe, M Claassen, MF Cotton, H Rabie, ... The Pediatric infectious disease journal 28 (12), 1125-1127, 2009 | 57 | 2009 |
| Breakthrough infections with SARS-CoV-2 Omicron variant despite booster dose of mRNA vaccine C Kuhlmann, CK Mayer, M Claassen, TG Maponga, AD Sutherland, ... Kuhlmann C, Mayer CM, Claassen M, Maponga T, Burgers WA, Keeton R, Riou C …, 2022 | 41 | 2022 |
| Pitfalls with rapid HIV antibody testing in HIV-infected children in the Western Cape, South Africa M Claassen, GU Van Zyl, SNJ Korsman, L Smit, MF Cotton, W Preiser Journal of clinical virology 37 (1), 68-71, 2006 | 40 | 2006 |
| Clinical experience with severe acute respiratory syndrome coronavirus 2–related illness in children: hospital experience in Cape Town, South Africa MM van der Zalm, J Lishman, LM Verhagen, A Redfern, L Smit, M Barday, ... Clinical Infectious Diseases 72 (12), e938-e944, 2021 | 32 | 2021 |
| Zidovudine with nevirapine for the prevention of HIV mother‐to‐child transmission reduces nevirapine resistance in mothers from the Western Cape, South Africa GU Van Zyl, M Claassen, S Engelbrecht, JD Laten, MF Cotton, GB Theron, ... Journal of medical virology 80 (6), 942-946, 2008 | 27 | 2008 |
| Clinical experience with SARS CoV-2 related illness in children-hospital experience in Cape Town, South Africa MM Van der Zalm, J Lishman, LM Verhagen, A Redfern, L Smit, M Barday, ... Clin Infect Dis 72 (12), e945-e947, 2020 | 22 | 2020 |
| Mutational heterogeneity in p6 Gag late assembly (L) domains in HIV-1 subtype C viruses from South Africa U Neogi, S Engelbrecht, M Claassen, GB Jacobs, G van Zyl, W Preiser, ... AIDS research and human retroviruses 32 (1), 80-84, 2016 | 16 | 2016 |
| Molecular characterisation and epidemiology of enterovirus-associated aseptic meningitis in the Western and Eastern Cape Provinces, South Africa 2018–2019 N Nkosi, W Preiser, G Van Zyl, M Claassen, N Cronje, J Maritz, ... Journal of Clinical Virology 139, 104845, 2021 | 15 | 2021 |
| Resistance in patients failing integrase strand transfer inhibitors: a call to replace raltegravir with dolutegravir in third-line treatment in South Africa K Steegen, G Van Zyl, E Letsoalo, M Claassen, L Hans, S Carmona Open forum infectious diseases 6 (10), ofz377, 2019 | 13 | 2019 |
| Surveillance of transmitted resistance to antiretroviral drug classes among young children in the Western Cape Province of South Africa GU van Zyl, MF Cotton, M Claassen, C Abrahams, W Preiser The Pediatric infectious disease journal 29 (4), 370-371, 2010 | 13 | 2010 |
| Moderate levels of preantiretroviral therapy drug resistance in a generalized epidemic: time for better first-line ART? GU van Zyl, CJ Grobbelaar, M Claassen, P Bock, W Preiser Aids 31 (17), 2387-2391, 2017 | 9 | 2017 |
| Prevalence of cardiotropic viruses in adults with clinically suspected myocarditis in South Africa K Hassan, C Kyriakakis, A Doubell, G Van Zyl, M Claassen, D Zaharie, ... Open heart 9 (1), e001942, 2022 | 8 | 2022 |
| Xpert HPV as a screening tool for anal histologic high-grade squamous intraepithelial lesions in women living with HIV GB Ellsworth, EA Stier, EY Chiao, SY Lensing, T Darragh, N Jay, ... JAIDS Journal of Acquired Immune Deficiency Syndromes 87 (3), 978-984, 2021 | 7 | 2021 |
| High burden of viral respiratory co-infections in a cohort of children with suspected pulmonary tuberculosis MM Van der Zalm, E Walters, M Claassen, M Palmer, JA Seddon, ... BMC infectious diseases 20, 1-9, 2020 | 7 | 2020 |
| Extraction buffer contaminated bacterially as a cause of invalid HIV-1 viral load results on the NucliSens EasyQ® system M Claassen, GU van Zyl, W Preiser Journal of virological methods 150 (1-2), 80-81, 2008 | 7 | 2008 |
| UMOYA: a prospective longitudinal cohort study to evaluate novel diagnostic tools and to assess long-term impact on lung health in South African children with presumptive … I Dewandel, M van Niekerk, E Ghimenton-Walters, M Palmer, MG Anthony, ... BMC pulmonary medicine 23 (1), 97, 2023 | 4 | 2023 |
| Breakthrough infections with SARS-CoV-2 omicron despite mRNA vaccine booster dose (vol 399, pg 625, 2022) C Kuhlmann, M Ck, M Claassen Lancet 399 (10325), 628-628, 2022 | 4 | 2022 |
