Four companies are already in phase 3 testing of their experimental coronavirus vaccines. That is the last phase of the trials before regulators approve the production, distribution and application of the vaccine. READ : Once a coronavirus vaccine is approved, there are great obstacles to distribute it
This is the race to find a vaccine and cure the covid-19
2020-07-23T20:32:58.404Z
Four companies are already in phase 3 testing of their experimental coronavirus vaccines. That is the last phase of the trials before regulators approve the produ ...