Spain’s large-scale study on the coronavirus indicates just 5% of its population has developed antibodies, strengthening evidence that a so-called herd immunity to Covid-19 is unachievable, the medical journal the Lancet reported on Monday.
Source: Spain’s coronavirus antibodies study adds evidence against herd immunity – CNN
Bad news indeed.
May not be an issue though …
Our collective dataset shows that SARS-CoV-2 elicits robust memory T cell responses akin to those observed in the context of successful vaccines, suggesting that natural exposure or infection may prevent recurrent episodes of severe COVID-19 also in seronegative individuals.
https://www.biorxiv.org/content/10.1101/2020.06.29.174888v1