#listentotheexperts – Does the BCG vaccine protect us against Covid-19 Dr Florette Treurnicht Head of Dept: Medical Virology, NHLS & Wits University BCGCoronavirusCOVID-19COVID19Floretteimmune systemIMMUNITYprotectTreurnichtVaccinevideoVITAMINvitamin covid19vlogYouTube