Phase 3 trial is a prerequisite step that company takes to confirm the safety of a vaccine. The steps includes giving vaccine to thousands of people in a limited environment.
On Aug. 11, Russian President Vladimir V. Putin announced that a Russian health care regulator had approved a Coronavirus vaccine named Sputnik V, before Phase 3 trials had even begun.
Vaccine experts decried the move as risky, yet many countries have declare interest to buy or receive the vaccine as aid from Russia, thereby increasing the perception in many countries that Russia is a saviour in the global stage