Study Shows Antibody Immunity to Coronavirus Wanes Over Time

A recent study has revealed that the prevalence of coronavirus antibodies declined rapidly in the British population during summer. This provides evidence to suggest that we may not naturally acquire long-lasting immunity to coronavirus after being infected.

Researchers from the Imperial College London have tracked antibody levels in the population after the first wave in March and April. The number of people with coronavirus antibodies fell by over a quarter from June to September, going from 6% to 4.4%. The largest decline in antibodies was seen in those aged 75 and up – one of the groups most vulnerable to COVID-19.

A decline in coronavirus antibodies does suggest coronavirus immunity may not last. One of the authors of the study told reporters, “it would look as if immunity declines away at the same rate as antibodies decline away, and that this is an indication of waning immunity at the population level.” A vaccine may generate a better immune response, but there is no guarantee. We must not get complacent in anticipation of a ‘silver-bullet’ solution. Keep social distancing, wear a mask, wash your hands regularly, stay home when sick and get tested.