FILE PHOTO: A man wearing a protective face mask walks past an illustration of a virus outside a regional science centre, as the city and surrounding areas face local restrictions in an effort to avoid a local lockdown being forced upon the region, amid the coronavirus disease (COVID-19) outbreak, in Oldham, Britain August 3, 2020. REUTERS/Phil Noble
(Reuters) - Antibody levels against the novel coronavirus rose and then held steady for up to four months in more than 90% of recovered COVID-19 patients in Iceland, according to a study published on Tuesday.
In previous studies, antibody levels dropped sharply within a few months after COVID-19, raising questions about the duration of immunity that infection may provide.
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