Great source and includes the downloadable data, thanks for sharing. > While antibody positivity in the oldest age groups remains high, it decreased slightly i

Great source and includes the downloadable data, thanks for sharing. > While antibody positivity in the oldest age groups remains high, it decreased slightly in some regions and countries. This means that some people in these groups did not have enough antibodies to be detected in the test, not that they do not have any immune protection against the virus. I found that sentence intriguing, here is the link they recommend for more information to explain why people might still have immune protection even with low (undetectable) levels of antibodies [1]. [1] https://blog.ons.gov.uk/2021/04/28/antibodies-and-immunity-how-do-they-relate-to-one-another/ https://blog.ons.gov.uk/2021/04/28/antibodies-and-immunity-h...