Mask-wearing brings the virus transmission risk down to 5%, he said
The coronavirus vaccine is expected to be ready at the end of autumn or the beginning of next year at the latest, Prof. Todor Kantardzhiev, Director of the National Centre of Parasitic Diseases said for NOVA.
96 new COVID-19 cases reported
In his opinion with the coming of autumn, the face masks should be worn because mask-wearing brings the virus transmission risk down to 5%.
