5 ms·
Blood samples from Oct 2019 revive debate on first signs of Covid in Italy
- Arnt 5y agoThe paper is at https://www.medrxiv.org/content/10.1101/2021.07.14.21260491v1 https://www.medrxiv.org/content/10.1101/2021.07.14.21260491v..., the FT page also at https://archive.is/m3mx2 https://archive.is/m3mx2. The key sentences from the paper's abstract: "Results suggest the presence of SARS-CoV-2 antibodies in some samples collected in the prepandemic period, though the detection of IgM and/or IgG binding and neutralizing antibodies is strongly dependent on the different serological assays and thresholds employed, while being absent in control samples collected one year before. These findings highlight the importance of harmonizing serological assays for testing SARS-CoV-2 virus spreading and may contribute to a better understanding the future virus dynamics." The paper seems honest, suggestive, inconclusive and good to me.