COVID-19 in people up to four months after mild or asymptomatic coronavirus infection, providing hope for the long-lasting efficacy of vaccines.The researcher, including those from Queen Mary University of London analysed antibody and T cell responses in 136 healthcare workers in the UK, who had mild or asymptomatic COVID-19 infection dating back to March.The study, published in the journal Science Immunology, found that 89% of healthcare workers analysed carried neutralising antibodies 16-18 weeks after infection.The team, also involving researchers Imperial College London and University College London, UK, found most workers also had T cells capable of recognising multiple different parts of the virus.However, they noted that the two.