fupresti
Former Big Deal
From what I linked, based on Sweden’s analysis, it’s very possible that people infected with covid19 don’t usually develop antibodies. This was what surprised them, and could be an obstacle towards herd immunity.
that’s already need proven false. 100% of people infected develop antibodies.
It’s also been shown that 30% of unaffected individuals show antibodies based on previous coronavirus infections.
Pre-existing and de novo humoral immunity to SARS-CoV-2 in humans
Several related human coronaviruses (HCoVs) are endemic in the human population, causing mild respiratory infections[1][1]. Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the etiologic agent of Coronavirus disease 2019 (COVID-19), is a recent zoonotic infection that has quickly...
www.biorxiv.org