Iceland's Antibody Counts Did 'Not' Decline Within 4 Months

Researchers measured antibodies in serum samples from 30,576 persons in Iceland, using 6 assays, and the results indicate that antiviral antibodies against SARS-CoV-2 did not decline within 4 months after diagnosis. Published in JAMA on September 1, 2020, these researchers estimate that the risk of death from infection was just 0.3% in Iceland.

Furthermore, these researchers stated: 'A relationship between a humoral immune response to SARS-CoV-2 infection and protection against reinfection by this virus has been shown in rhesus macaques, but has yet to be established in humans.'

'Regardless of the relationship or lack thereof between seropositivity against SARS-CoV-2 and protection against reinfection, the low SARS-CoV-2 antibody seroprevalence in Iceland indicates ... that the Icelandic population is vulnerable to a potential 2nd wave of coronavirus infections.'