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Could a Nurgle based disease/infection/parisite infect Tyranids? Or would they adapt to it?

What, like if they ate this dude and caught his AIDS?

I hate auto correct

In theory, yes.

If they couldn’t adapt, it’s likely the Hive Mind would leave that fleet or splinter to its fate.

Probably yes, because Nurgle deseases can even infect Necrons. On the other hand it is sometimes hinted that Nurgle deseases are actually Warp based and go away when Nurgle forces are defeated. With that in mind the Shadow in the Warp could be an effektive protection against Nurgle plagues.

It's a bit like asking if an unstoppable force could move an immovable object, but I'm with Cortez that cut off from the energies of the warp Nurgles plagues aren't much cop.

Yep theoretically a virus could adapt faster than the nids could adapt to counter it, mundane viruses have been used to kill Tyranids before and they still have not adapted to hellfire shells which are a mutagenic acid iirc, it's a shame dark angels don't get their molecular acid rounds in 40k, it's the same stuff aliens use for blood in a bolt round... That's something nids would hate.

To add to the above, Tyranids are also quite resilient against the power of the warp too. They don't have souls, and they actually block out psychic energy through their presence.

Again, something powerful enough can still harm them, but there's not firm indiction of exactly how much it would take.

Basically, yes it is possible without breaking existing lore if it's what a lore writer wanted to hapoen. BUT it would have to be an extraordinarily powerful effect to counteract the Tyranids natural resistances and adaptability.

From the Death Guard Codex ("The Doom of Hesp), where the Death Guard deploy plague spells, virus bombs and daemonic diseases against Hive Fleet Lotan, on the planet of Hesp:

"The first Tyranid hive ship to taste this poisoned slurry recoils, its proboscis melting, and is bombarded into oblivion by the rest of its fleet. Hesp is left as an endless sea of toxic slime, too virulent for even the hive fleets to devour."

Was there also not a bit about corrupted hive ships in one of the old rule books? Or was that void whales?

In the previous gsc book it talks about some cult landing in the garden of Nurgle and becoming “re-purposed” to serve papa Nurgle. Seems to imply that tyranid/human hybrids are at least vulnerable.

mightymconeshot wrote:
Was there also not a bit about corrupted hive ships in one of the old rule books? Or was that void whales?

Storm of Iron has a hive ship of some sort captured by the iron warriors and used to land titans iirc

Yes, but it would be pointless because the Hive Mind would quarantine the infected section and fling it into a star.

Nurgle's Blessings can infect anything, when you're coming from a dimension of inherent unreality where nothing matters and everything is now and never, everything can fall to the power of the Warp. Nurgle's gaze can decay stone and steel as readily as flesh, why not the Tyranids?

Now, I suspect that between the lack of Tyranid warp activity and the Shadow, their own impressive biology, and, more importantly, ability to react to infection in an organized and coherent manner, would make such an infection rather unlikely to happen in the first place just because it doesn't seem to be particularly conducive to anything Nurgle would channel through in the first place. However, should they arrive somewhere that was occupied by others more suitable for Nurgle's interests, I'm sure it could spread to the Tyranids quite easily.

 Vaktathi wrote:
Nurgle's Blessings can infect anything, when you're coming from a dimension of inherent unreality where nothing matters and everything is now and never, everything can fall to the power of the Warp. Nurgle's gaze can decay stone and steel as readily as flesh, why not the Tyranids?

Now, I suspect that between the lack of Tyranid warp activity and the Shadow, their own impressive biology, and, more importantly, ability to react to infection in an organized and coherent manner, would make such an infection rather unlikely to happen in the first place just because it doesn't seem to be particularly conducive to anything Nurgle would channel through in the first place. However, should they arrive somewhere that was occupied by others more suitable for Nurgle's interests, I'm sure it could spread to the Tyranids quite easily.

Thats kind of the thing, if the chaos gods decided to total war the tyranids then the tyranids would lose, hard, the gods can open warp rifts anywhere if they expend enough power, and then send an endless tide of deamons, tens of thousands of chaos marines and billions of humans, all while corrupting the planet the nids are trying to take, but the great game is more important to them.

 Formosa wrote:

 Vaktathi wrote:
Nurgle's Blessings can infect anything, when you're coming from a dimension of inherent unreality where nothing matters and everything is now and never, everything can fall to the power of the Warp. Nurgle's gaze can decay stone and steel as readily as flesh, why not the Tyranids?

Now, I suspect that between the lack of Tyranid warp activity and the Shadow, their own impressive biology, and, more importantly, ability to react to infection in an organized and coherent manner, would make such an infection rather unlikely to happen in the first place just because it doesn't seem to be particularly conducive to anything Nurgle would channel through in the first place. However, should they arrive somewhere that was occupied by others more suitable for Nurgle's interests, I'm sure it could spread to the Tyranids quite easily.

Thats kind of the thing, if the chaos gods decided to total war the tyranids then the tyranids would lose, hard, the gods can open warp rifts anywhere if they expend enough power, and then send an endless tide of deamons, tens of thousands of chaos marines and billions of humans, all while corrupting the planet the nids are trying to take, but the great game is more important to them.

Can they open warp rifts where the shadow in the warp is strong enough though?

Genuine question, not sure where the lore sits here.

Well they ate the Nids in the Blood Angel realm?

 Formosa wrote:

mightymconeshot wrote:
Was there also not a bit about corrupted hive ships in one of the old rule books? Or was that void whales?

Storm of Iron has a hive ship of some sort captured by the iron warriors and used to land titans iirc

That was specifically noted as the Obliterator Virus (or at least a variant thereon).

Shadow In The Warp and Daemons? Well, it's not actually shutting off communications the way a Pariah or Blank does. Rather, it's the sheer volume of psychic activity creates a sort of White Noise, preventing communication (lost in the static), and the sheer number of potent minds driving Psyker's quite, quite insane. So I'm not sure it would hinder Daemons. Indeed, the sheer volume of activity may have the opposite effect?

They can and do but its usually limited as the Hive Mind destroys the infected or crash evolves resistance.

Same as Necrons are not immune but its so much harder for chaos to corrupt their structure.

Sounds to me like basically they're as strong against each other as the narrative requires in that moment.

So yeah, a Nurgle disease can obliterate Tyranids. But also Tyranids can shake off a Nurgle disease like it was a cold. Depends on circumstances and what the point of the story is.

Tyranids probably have acid for blood and spit so maybe not. They love disgusting larve just as much as the Great Unclean one...

Nurgle has so many wonderful gifts. I'm sure they can't adapt to *all* of them.

SG