A new Swedish study found that just 7% of people in Stockholm had caught the novel coronavirus COVID-19 by the end of April.
According to Business Insider, Swedish forecasters had previously predicted up to half the population would catch the virus by May.
However, epidemiologists say at least 60% of people need to catch the virus before any protective immunity can be achieved.
Sweden has not implemented strict, wholesale lockdown measures in response to the coronavirus pandemic.