LONDON (Reuters) – A small but key UK study has found that “cellular immunity” to the pandemic SARS-CoV-2 virus is present after six months in people who had mild or asymptomatic COVID-19 – suggesting they might have some level of protection for at least that time.
Scientists presenting the findings, from 100 non-hospitalised COVID-19 patients in Britain, said they were “reassuring” but did not mean people cannot in rare cases be infected twice with the disease.