There are at on of safety precautions and constant COVID testing being done for Jurassic World: Dominion, but the production much also take into account current events when shooting on location.
As such, there will be a smaller crew working in Malta, possibly resulting in more filming in controlled environments like Pinewood Studios U.K..
This news comes to us from Variety, and shows how constantly things are changing in the entertainment world as film and TV sets adjust to the new normal.