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  • COVID-19

    T cell immunity to SARS-CoV-2 following natural infection and vaccination

    Conventional T cells are phenotypically and functionally diverse and have a critical role in long-lasting protection conferred by immune memory. CD8+ cytotoxic T lymphocytes (CTL) in the respiratory tract blunt virus replication by directly killing infected cells and secrete...

  • COVID-19

    COVID-19. Delta Variant

    The Delta variant causes more infections and spreads faster than early forms of SARS-CoV-2, the virus that causes COVID-19 The Delta variant is more contagious. The Delta variant is highly contagious, more than 2x as contagious as previous variants. Some data suggest the Delta...

  • COVID-19

    COVID-19. Omicron Variant

    On November 24, 2021, South Africa reported the identification of a new SARS-CoV-2 variant, B.1.1.529, to the World Health Organization (WHO). B.1.1.529 was first detected in specimens collected on November 11, 2021, in Botswana and on November 14, 2021, in South Africa. On...

  • Intestinal Microbiome - EnteroScan®

    COVID-19 and Intestinal Microbiome

    The diversity and the quantity of the intestinal microbiome can affect COVID-19 severity as well as the immune system response to infection, according to research published in the journal ¨Gut¨. According to the findings, imbalances in the microbiome composition may also be...

  • Diagnostic Tests - DiagnosticTests®

    The biology of Coronaviruses

    Coronaviruses get their name from the characteristic viral particle (virion) that looks like a corona because small protrusions are formed around their surface. This family of viruses infects various vertebrates, mainly mammals and birds, and it is considered one of the most...