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.
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 outbreak, in Oldham, Britain August 3, 2020. REUTERS/Phil Noble/File Photo
The new finding may have implications for reinfection risks and vaccine durability, said Kari Stefansson, chief executive of deCode Genetics, which conducted the study. Based on the results, they estimate that about 1% of the population had been infected. Of that group, 56% had received a confirmed diagnosis after a gold-standard PCR laboratory test. Another 14% had not been formally diagnosed but had quarantined after exposure to the virus. In the remaining 30%, the antibody tests led to discovery of prior infection.
The results, published in The New England Journal of Medicine, focused on a homogeneous population from a single country, so the findings may not be the same in other parts of the world with diverse populations.
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