According Kaspery there are only 30,000 infected Flashback Mac connected to the Web. This is great news although it is likely that this number will be more and more difficult to fall, infected machines are certainly those people unfamiliar with the Apple news.
In any case, and given the Noise has done this story there is virtually no chance that those who developed Flashback take the risk of using it again further limiting the impact of the latest Mac through which to channel this botnet.
It can therefore be considered to pretty much the case Flashback is complete. You only wish it had been a lesson to everyone that this kind of thing can not happen again so easily, and especially in the greatest indifference.