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Are Xenomorphs immune to diseases and viruses, at all stages of development, from the egg stage onwards?

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    "Acid for blood" doesn't seem conducive to viral or bacterial infection – Valorum Jun 24 '20 at 7:47
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No, they are not immune. Probably...

In the comic series "Aliens: Labyrinth", dr. Paul Church describes his experience when he was kidnapped by Xenomorphs. Instead of immediately cocooning him and turning into a host for a facehugger, Aliens were experimenting on him and his family i.e. they were trying to... make more humans (in a more squicky way that you can imagine).

Paul soon discovers that the Hive is dying from a disease - it has been infected by a sort of a mold and Xenomorphs are barely able to contain the spread:

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He starts sabotaging Aliens efforts ultimately destroying the hive

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However, dr Paul Church is a sociopath, so it is possible that this is all a lie.

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Surely this falls under the "no one knows" banner? Untill such time as a plot for a movie or any other medium in the canon attempts to use a virus to combat the xenomorphs we will never really know

I would lean on the side of yes the extremely acidic blood of the creatures would lend them to being immune from all but the most specialized virus and or disease.

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I'd suspect not, but it is unknown how cells in silicon-based life would react to invaders. I think they may be immune to carbon-based diseases, though, or at least very slow to be susceptible to them.

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