I'm attaching a save game where Slimelung germs in my steam turbine are multiplying rapidly in a thin film of water. The tooltip says it should be dying off at 560,000 germs per second due to the temperature, but it's actually increasing at about 3 million germs per second.
EDIT: It appears to come and go. I observed it some more, and at one point the germs were dying as expected, but when some return water from the steam turbine exited the vent, the germ count abruptly shot up over 100 million.
Examine the steam chamber under the steam turbine in the bottom right. There's a small pool of water at the liquid vent that is behaving oddly. Everywhere else the slimelung is dying out, but in those few kilograms of water they're reproducing rapidly despite the 95 C temperature.