[X] Send those nearing step 2 to the planet.
-[X] send sensors with/on them so we can observe ongoing changes.
-[X] if QM allows, hold them in transporter buffer for maximum safe period to buy more time
[X] medical ideas to throw at the Doc, see if anything sticks:
-[X] blood plasma donations from vulcanoids to infected (avoids blood-type clotting concerns, may carry whatever hurt the parasite)
-[X] is it the vulcan touch telepathy? what happens if a vulcan mind-melds an infected?
--[X] Bonus, this may detect if the parasites form a consciousness
-[X] barbaric ancient practices like chemotherapy (or even having a fever) rely on the idea that poison/heat/whatever kills the tiny no-biological-reserves antagonist faster than the giant resilient host. Do we have anything that hurts both parties, but hurts the parasites MORE?
--[X] not just chemical, but also things like a phaser on stun, or applied electric current
-[X] Does Dalirath or Yangashira have any new compounds/antibodies in their systems since infection? Those may harm the parasite.
-[X] do these parasites have a resonant sonic frequency? Can we just pop the little bastards?
-[X] Do we have any cryostorage capacity? Putting a patient on ice might kill the parasites or encourage them to leave.
[X] Assemble a map of triolic radiation density on the planet's surface. Then pay extra attention to any points of anomalously high/low radiation levels.