Four out of more than 20 Covid-19 vaccine candidates being developed in Thailand are now being tested on humans, the final process required before they are submitted for approval by the Food and Drug Administration (FDA), the government said on Saturday.
The vaccines are Chula-Cov19, HXP-GPOVac, Baiya Sars-CoV-2 Vax and Covigen, said deputy government spokeswoman Rachada Dhnadirek.
