Johannes Viljoen

Genotypic and phenotypic characterization of viral isolates from HIV-1 subtype C-infected children with slow and rapid disease progression.

Cohort Profile: Africa Centre Demographic Information System (ACDIS) and population-based HIV survey.

In-house HIV-1 RNA real-time RT-PCR assays: principle, available tests and usefulness in developing countries.

HIV incidence in rural South Africa: comparison of estimates from longitudinal surveillance and cross-sectional cBED assay testing.

Comparison of the Generic HIV Viral Load assay with the Amplicor HIV-1 monitor v1.5 and Nuclisens HIV-1 EasyQ v1.2 techniques for plasma HIV-1 RNA quantitation of non-B subtypes: the Kesho Bora preparatory study.

Dried blood spot HIV-1 RNA quantification using open real-time systems in South Africa and Burkina Faso.

Cumulative exposure to cell-free HIV in breast milk, rather than feeding pattern per se, identifies postnatally infected infants.

Tetra-kis(8-quinolinolato-κN,O)hafnium(IV) dimethyl-formamide solvate monohydrate.

HIV-1 reservoirs in breast milk and challenges to elimination of breast-feeding transmission of HIV-1.

Cell-free (RNA) and cell-associated (DNA) HIV-1 and postnatal transmission through breastfeeding.

Current challenges to viral load testing in the context of emerging genetic diversity of HIV-1.

Population-based CD4 counts in a rural area in South Africa with high HIV prevalence and high antiretroviral treatment coverage.

Pivotal role of HIV and EBV replication in the long-term persistence of monoclonal gammopathy in patients on antiretroviral therapy.

Human papillomavirus seropositivity and subsequent risk of HIV acquisition in rural South African women.

Elevated concentrations of milk β2-microglobulin are associated with increased risk of breastfeeding transmission of HIV-1 (Vertical Transmission Study).

Comparison of EBV DNA viral load in whole blood, plasma, B-cells and B-cell culture supernatant.

Performance of two real-time PCR assays for hepatitis B virus DNA detection and quantitation.