CORONAVIRUSCoronavirus: Bill Gates says 7bn people will need Covid-19 vaccine and it will take 18 monthsThe Bill & Melinda Gates Foundation is working on a vaccine for Covid-19 and the Microsoft founder suggested it will be a year and a half in the making.AStvUpdate: May 9th, 2020 08:47 EDTTagged in:Bill GatesCoronavirus Covid-19CienciaPandemiaCoronavirusVirologíaEnfermedades infecciosasEpidemiaMicrobiologíaEnfermedadesMedicinaBiologíaSaludCiencias naturales