It’s claustrophobic, so pack a coat and get used to the Arctic
Aside from some opening scenes to bring the team together and make the trip into the Arctic, virtually all of the action is contained to the base and surrounding areas. Needless to say, it helps play up the claustrophobic theme of facing a terrible, super-powered pathogen. Heck, they even have some of the action play out some narrow air ducts (with the obligatory Die Hard joke, of course) to sell it. The team is stuck out there with this super virus, and so are we.