China has ramped up its efforts in the global race of developing a vaccine for COVID-19 and as per media reports, four more nations have been given the go-ahead to start the last-stage clinical trials of vaccine candidates developed by Sinovac Biotech and China National Biotec Group (CNBG).

China has ramped up its efforts in the global race of developing a vaccine for COVID-19 and as per media reports, four more nations have been given the go-ahead to start the last-stage clinical trials of vaccine candidates developed by Sinovac Biotech and China National Biotec Group (CNBG).