Board Thread:General Discussion/@comment-26959384-20160808180053/@comment-28903282-20161223053756

No living Precursors (or signs of them) have been reported found.

The Precursors were STUDYING the Carar and their primary quarantine failed (bio-research station) when a diseased Sea Dragon broke out. Now the entire planet is infected (when you first start, the PDA says something about high bacteria levels in the water or something).

According to elsewhere on the Wiki (sorry, do not recall off-hand), the Precursors took an existing species and internally made them cyborgs to hunt and kill Carar-infected creatures.

This means, that of all the creatures, native and otherwise (that includes the Player), only the artificial Warpers and the naturally-immune Sea Emperor are not infected/cannot be infected.

The curative enzymes (will) come from the Sea Emperor; that's how you cure yourself to go back to the G.U.N. and deactivate it (re: only uninfected individuals may deactivate the quarantine lock).