'People who've had Covid-19 likely immune for six months': Swedish Public Health Agency
The Local Sweden
The Swedish Public Health Agency has said people who have been diagnosed and recovered from the coronavirus are likely immune from re-infection for several months, even if they don't have antibodies – but they warned that members of the public should keep following guidelines around social distancing.
https://www.thelocal.se/20200722/people-whove-had-covid-19-likely-immune-for-six-months-swedish-public-health-agency