http://documents1.worldbank.org/curated/en/993371585947965984/pdf/World-COVID-19-Strategic-Preparedness-and-Response-Project.pdf?fbclid=IwAR2fvXYF1Lh5_dnvVuNGRSMHTovIlGazmJF4UdcH7uHXxM_KU8rltsSyVrs
Δυό Λόγια...