Torres JP, Pinera C, De La Maza V, Lagomarcino AJ, et al. SARS-CoV-2 antibody prevalence in blood in a large school community subject to a Covid-19 outbreak: a cross-sectional study. Clin Infect Dis 2020 Jul 10. pii: 5869860. doi: 10.1093.
PMID: 32649743