COVID-19 Virus Reinfections Rare, But Riskiest After Age 65

March 19, 2021

(Medscape) – The first large study of its kind reveals that SARS-CoV-2 reinfections remain rare, although people older than 65 are at higher risk. When researchers analyzed test results of 4 million people in Denmark, they found that less than 1% of those who tested positive experienced reinfection. Initial infection was associated with about 80% protection overall against getting SARS-CoV-2 again. However, among those older than 65, the protection plummeted to 47%.