New research involving scientists from Queen Mary University of London has found evidence of protective immunity in people up to four months after mild or asymptomatic COVID-19.
The study, published today in Science Immunology, analyzed antibody and T cell responses in 136 London healthcare workers who had mild or asymptomatic COVID-19 infection dating back to March 2020.
Source:https://medicalxpress.com/news/2020-12-evidence-immunity-mild-asymptomatic-covid-.html