June 29, 2020
Dr. John Campbell
Detectan el SARS-CoV-2 en aguas residuales recogidas en Barcelona el 12 marzo de 2019
Universitat de Barcelona. June 26, 2020
https://www.ub.edu/web/ub/es/menu_eines/noticies/2020/06/042.html
Coronavirus traces found in March 2019 sewage sample, Spanish study shows
June 26, 2020
https://www.reuters.com/article/us-health-coronavirus-spain-science/coronavirus-traces-found-in-march-2019-sewage-sample-spanish-study-shows-idUSKBN23X2HQ