Talk:Alien Containment/@comment-34742167-20180218213011/@comment-34805801-20180224170854

I have found that placing an enzyme carrier Peeper in the alien containment with infected fish will cure them all and you can then use the scanner on the now cured fish for a new PDA entry. These peepers can be found exiting the alien vents found scattered around the world and they have the distinct property of leaving golden trails behind as they swim.

This is a very cool and subtle mechanic of the game which I haven't seen anyone else figuring out yet, I hope it helps you :)