Can people catch coronavirus twice? UK team investigates

The study will help understanding of what immune responses protect against reinfection, says lead author
Reuters Health

UK researchers have started a trial which will deliberately expose participants who have already had COVID-19 to the virus again to examine immune responses and see how many get reinfected.

The study launched on Monday seeks to reinfect people who have previously had COVID-19 in an effort to deepen understanding about immunity, rather than infecting people for the first time.