Nanocovax, developed by the Nanogen Pharmaceutical Biotechnology JSC, is the first Vietnam-made COVID-19 vaccine to enter human trials, with another two from other manufacturers to follow in February and March 2021. The first candidates are among 60 volunteers, aged 18-50, selected for the first phase of the vaccine trials. They are divided into three groups for receiving three doses of 25 mcg, 50 mcg and 75 mcg. With safety staying first in vaccine clinical trials, the first volunteers received the minimum dose of 25 mcg as. They will stay at separate rooms at the Military Medical Academy for the first 72 hours for medical assessment. They will continue to be closely monitored at their residences for the next 56 days. A team of more than 40 medical experts has been set up to deal with unwanted side effects after the vaccination./.