LONDON – Oxford Immunotec plc is aiming to plug a significant gap in the COVID-19 diagnostics landscape, with the development of a commercial clinical grade test for quantifying T cell responses to the SARS-CoV-2 virus. T-Spot Discovery SARS-CoV-2, currently available for research use only, is based on the same automated technology as the company’s tuberculosis diagnostic, which is approved for use in more than 60 countries.