I was running Infected with a group, and many times when I heal someone, the combat text says "Your Medical Tricorder gives 115 (461) hit points to xxxx." It does in fact only heal them for 115. Other times it just says "Your Medical Tricorder III gives 461 hit points to xxxx."
Am using Medical Tricorder III with my Medic Mk IX kit. Is that 115 (461) a bug or does my heal just not always land for the full amount?
Or maybe the Borg have a healing debuff? I didn't submit a bug report in case it was intended.
The borg assimilation power does have a healing debuff, yes. Its still worth tossing a heal or two on someone getting assimilated, because the resist debuffs help them take less damage even if the healing isn't very effective.
But just stay out of melee range unless you like groupthink and Terminator movies!