I had two theories that this latest episode seemed further back.

You know how Bob sends Mohinder to get Claire because she can regenerate? How will that stop the virus? Or if Claire is immune, how would they extract the immunity? It doesn't make sense. I think that the twins are the ones that hold the key, which means right now, Sylar holds the key to stopping 98% of the population from being wiped out. Ironic, eh?

Secondly, I think that Claire's new boyfriend kills Bennet. Not only is he in the picture, but Claire doesn't seem stricken in sadness. I think it's the good girl gone bad scenario. She changes her loyalties from her father, who speaks in lies, to her fly-boy, who is like her. I dunno though, just a thought.

Anyway, maybe it's a little out of place, but judging by the reaction of Claire's boyfriend, and by Bob's orders, it seems to be a likely scenario. Who ole Mo shoots, IDK. Someone he doesn't want to, obviously, judging by the tears.

If Sylar kills Alejandro... 93% of the world is pretty much screwed, that is, unless Sylar manages to regain the abilities. And then, we have a whole new problem.

is maya's ability the shanti virus? or is it something entirely different

I think that Alejandro is similar to Linderman and that they can cure/heal anyone. so absolutely Alejandro is the one. I think that the theory behind using Adam or Claire as a cure won't work. Who knows, possibly that is the mutation of the virus that is so damaging because the mutated virus then becomes immortal. oh wow, if that comes to be true how bad would that be (I hope I am wrong).

I think Maya is the reason it becomes airborne not Claire. Maya uses the power on Niki which mutates it into an airborne virus. Alejandro is the cure tho and Claires ability doesn't continue after leaving the body. Otherwise her regineration isn't in the blood otherwise it wouldn't matter if something in stuck in her brain.