The northern province is the only locality nationwideselected for the second phase trials. About 80 volunteers are expected to receivethe first shot of the vaccine on August 18.
Covivac has been developed and produced by the Instituteof Vaccines and Medical Biologicals (IVAC). It is the second homegrown vaccineapproved by the Ministry of Health for clinical trials, after Nanocovax. Thevaccine has been given to 100 volunteers at Hanoi Medical University during the first phase of human trials.
In the second phase, a total of 375 volunteers, aged over18, have been chosen and classified into three groups for the 3mcg and 6 mcgdosages and a dose of AstraZeneca vaccine.
According to IVAC Director Duong Huu Thai, AstraZenecavaccine is being used in place of a placebo, which would compare theimmunogenicity of the two vaccines. Blood samples collected from the secondphase will be sent to Canada for an independent evaluation.
The research team expects to finish the injection of thefirst jabs on August 23 and the second shots will be administered to the volunteers after 28 days./.