2 May 2020 K. Paul Clinical Trial of Covid-19 Vaccine to Begin in Nigeria- WHO The World Health Organization stated that the clinical trial for Covid-19 vaccine will begin in Nigeria. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on WhatsApp (Opens in new window) WhatsApp More Share on LinkedIn (Opens in new window) LinkedIn Share on Pinterest (Opens in new window) Pinterest Like Loading... Related