Over-65s most vulnerable to repeat SARS-CoV-2 infection: study

However the absolute risk of reinfection across the community is low, researchers say

Prior infection with SARS-CoV-2 will protect only about half of elderly people from repeat infection, according to the largest study to date on natural immunity.

Overall, however, reinfection is rare and previous infection will protect about 80% of adults younger than 65, the Danish population-based study shows.

“Our findings could inform decisions on which groups should be vaccinated and advocate for vaccination of previously infected individuals because natural protection, especially among older people, cannot be relied on

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