In fight against Covid variants some firms target T cell jabs Issued on: 08/05/2021 - 07:39 Some researchers are looking at targeting T cells instead of antibodies to create a wider immune response better able to tackle coronavirus variants Christophe ARCHAMBAULT AFP 3 min Paris (AFP) Getting Covid vaccines into the arms of the world's population is an international priority -- but will today's jabs stay effective against virus variants that are spreading across the globe? It is one of the big questions about the pandemic, with Pfizer chief Albert Bourla recently acknowledging that it is likely a booster will be needed to help extend the protection conferred by its vaccine and ward off new variants.