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Showing 1–5 of 5 results
Advanced filters: Author: Yajna Ramphal Clear advanced filters

  • Yajna Ramphal and Tulio de Oliveira are fascinated by the adaptive evolution of chikungunya virus.

    • Yajna Ramphal
    • Tulio de Oliveira
    Comments & Opinion
    Nature Ecology & Evolution
    Volume: 10, P: 610

  • Genomic epidemiology studies have indicated southern Africa as likely sources of emergence of six Omicron lineages since November 2021. Here, the authors trace the geographic origins and dispersion patterns of these six lineages and highlight Gauteng province in South Africa as likely to have played a key role.

    • Graeme Dor
    • Eduan Wilkinson
    • Tulio de Oliveira
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • A study quantifying the neutralization of severe acute respiratory syndrome coronavirus 2 variants in individuals infected with Omicron/BA.1 shows that vaccinated individuals previously infected with Omicron have enhanced protection against reinfection with current variants, \including Omicron/BA.2, while Omicron/BA.1 infected unvaccinated individuals have limited protection.

    • Khadija Khan
    • Farina Karim
    • Alex Sigal
    ResearchOpen Access
    Nature
    Volume: 607, P: 356-359

  • Genomic characterization of the SARS-CoV-2 Omicron lineages BA.4 and BA.5, responsible for the fifth COVID-19 pandemic wave in South Africa, shows continued viral diversification and provides insights into the potential mechanisms underlying the ability of the new lineages to outcompete their predecessors.

    • Houriiyah Tegally
    • Monika Moir
    • Tulio de Oliveira
    ResearchOpen Access
    Nature Medicine
    Volume: 28, P: 1785-1790