Advise desperately needed regarding parasite [View All]

My ship mates and I were in hypersleep on a mining vessel owned by a major company.

We were prematurely woken by the ship computer, which picked up a distress signal from the planet LV-426.

A small recon crew went to check things out, but one of the crew had some sort of accident and it appears a parasitic organism has attached itself to his face.

The recon crew is in isolation in the airlock, per standard procedure. But with the captain as part of that crew, guess who's in charge - right, me!

Everyone is yelling at me and giving me dirty looks because I don't want to let them in until we're sure there's no danger to the rest of the crew, or the ship cat which I'm very fond of.

I hate having everyone mad at me, but I feel I should be following the rules. So what do I do?