I say "no" as well, BUT if you deliver the attack using a "Heartseeking Amulet", i think it would apply.
RAI, though, i believe it you're supposed to touch the target to achieve this effect. Sort of, "uhhh, he touches people and they get sick!"
Now that i think of it... Wouldn't this feat arm your unarmed attack, like, forever, as long as you have a Necromancy spell of 3rd level to cast?