Too early for conclusions on long-term COVID-19 immunity, but some findings suggest that immune memory against the virus lasts for up to eight months and possibly longer
Scientists still have a lot to learn about the factors contributing to COVID-19 immunity. Among some of the biggest questions is the duration of protection developed after natural infection or vaccination. This has significant implications on how well herd immunity can be maintained through vaccination and how often reinfection occurs in recovered COVID-19 patients. Some studies reported encouraging findings showing that immune memory may endure for at least several months and possibly longer. But at the moment, it is too early to make firm conclusions about how long COVID-19 immunity lasts.