The British Medical Journal published 14 October 2020 looked into this. They reviewed the National Institute for Health research paper published on 15 October 2020. COVID-19 was declared a pandemic by the World Health Organisation in March 2020. It has had...
The Antibody Response and SARS-CoV-2 Infection, How Long does it Last? A preprint published by Jeffrey Seow and other suggests that the antibody response to SARS-CoV-2 can be detected in most infected individuals 10 to 15 days following the onset of COVID-19...