Illustrative image (Photo: SGGP)
The study participants must be 18-59 years old, free of current or past-history of infectious diseases, and have not been inoculated with Covid-19 vaccines.
Head of the Institute of Vaccines and Medical Biologicals (IVAC), Duong Huu Thai said that the institute will select 375 volunteers for phase 2 in Vu Thu District in the northern province of Thai Binh on August 11.
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