There are currently nine vaccine candidates in late-stage human trials, although pharma giant AstraZeneca paused their trials after a volunteer developed an unexplained illness.
This final leg of human vaccine trials will recruit 5,000 volunteers above age 18 in Riyadh, Dammam and Mecca.
Scientists said the results provide data from a wider group of participants than the earlier trial, including a sub-group aged over 55 years.
China allows limited use of COVID-19 vaccine CanSino for their military after clinical trials shows its effectiveness
The vaccine has been approved for a period of one year after clinical trials proved it was safe and showed some efficacy.
Chinese military gets approval to run clinical tests of experimental Coronavirus vaccine on human being
AMS’ candidate, named ARCoV, uses mRNA technology, an approach also used by Moderna Inc in the United States and German firm CureVac.