study published Wednesday in the New England Journal of Medicine found that there were few confirmed reinfections among 353,326 people who got Covid-19
To determine how many people got reinfected, scientists from Weill Cornell Medicine-Qatar compared the records of people with PCR-confirmed infections between February of 2020 and April 2021. They excluded 87,547 people who got the vaccine.
Researchers found that among the remaining cases there were 1,304 reinfections. The median time between the first illness and reinfection was about 9 months.
Among those with reinfections, there were only four cases severe enough that they had to go to the hospital. There were no cases where people were sick enough that they needed to be treated in the intensive care unit.