Prevalence of SARS-CoV-2 in Spain (ENE-COVID): a nationwide, population-based seroepidemiological study – The Lancet

Prevalence of SARS-CoV-2 in Spain (ENE-COVID): a nationwide, population-based seroepidemiological study – The Lancet
— Read on www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31483-5/fulltext

A very revealing precedent-setting piece of research.