COVID-19 Reinfection Rare, But More Common in Older People, Study Finds

March 18, 2021

(Reuters) – The majority of people who have had COVID-19 are protected from getting it again for at least six months, a study published on Wednesday showed, but older people are more prone to reinfection than younger people. The study, appearing in the Lancet medical journal, found that just 0.65% of patients tested positive a second time for COVID-19 after previously being infected during Denmark’s first and second waves. That was much lower than the 3.27% who were positive for the virus using highly accurate PCR tests after initially being negative.