Supposedly people who got covid-19 get immunity after it. According to this article,
More SARS-COV-2 reinfections reported but still a rare event citing several studies,
Bertollini and his colleagues conclude in their report that “the risk for documented reinfection was very rare at about 1-2 reinfections per 10,000 infected persons.” The researchers further note that the “findings suggest that most infected persons do develop immunity against reinfection that lasts for at least [a] few months, and that reinfections (if they occur) are well tolerated and no more symptomatic than primary infections
Are there any reasons for people to get vaccinated?
Will getting a vaccine have any additional effect on your immune system if you already got covid-19?