Trials were not needed in 2020. The same way they are not needed in 2022 - 8 mice trial used to approve bivalent booster.

The purpose of these products is depopulation and you don't need safe products to kill.

 "The Elites are Planning to Kill Billions of People" -- Prime Minister of Malaysia (2015) https://twitter.com/cryptowala65/status/1546003810253803521