Sweden's controversial "herd immunity" strategy depends heavily on the hope that infection with the ... [+] Covid-19 coronavirus will confer long lasting immunity. Researchers have been trying to figure out whether you can get infected by the Covid-19 coronavirus more than once. But as alluded to earlier, conducting such human challenge studies in a safe and ethical manner is not that easy. Not having symptoms may be great for the present time but could potentially elicit a weaker immune response. If your immune response was not very strong in the first place, then perhaps the door is left wide open for re-infection.

Source: Forbes July 19, 2020 20:49 UTC