The UK Biobank survey is out today, from the press release:
For the 6-month period from the end of May 2020 to the beginning of December 2020, UK Biobank collected monthly blood samples and data on potential symptoms from 20,200 UK Biobank participants and their adult children and grandchildren. The study also found that:
The proportion of the population with antibodies to SARS-CoV-2[1] (‘seroprevalence’, which indicates past infection) rose from 6.6% at the start of the study period (May/June 2020) to 8.8% by the end of it (November/December 2020).
Across the various population groups included in the study, it was found that:
-> SARS-CoV-2 seroprevalence was most common in London (12.4%) and least common in Scotland (5.5%).[2]
-> There was no difference in seroprevalence by gender, but the proportion of participants with detectable antibodies was higher in younger people (13.5% among those under 30) and lowest in the elderly (6.7% among those over 70).
-> The seroprevalence of SARS-CoV-2 was highest among participants of Black ethnicity (16.3%) and lowest among those of White (8.5%) and Chinese ethnicities (7.5%).
The most common symptom associated with having antibodies to SARS-CoV-2 was a loss of sense of taste and smell, which was reported by 43% of sero-positive participants.
About one-quarter (24%) of sero-positive participants were completely asymptomatic and 40% did not have one of the three ‘classic’ COVID-19 symptoms (fever, persistent dry cough or loss of sense of taste or smell).
There’s a good graphic at the bottom, and a link to the full report.
www.ukbiobank.ac.uk/learn-more-about-uk-biobank/news/uk-biobank-study-shows-that-covid-19-antibodies-remain-for-at-least-6-months