Doubtful. Why would anyone bother? It would take sophisticated medical facilities to create such a virus and the people inclined to do so tend to live in caves while being hunted by the US army.
It would not be unusual for natural, continual known biology to produce such a virus, in fact it is predicted by the biology of the flu. Why we have medical surveillance for these events.
I know the wingnuts are already all over this. It was produced by the Illuminati complex consisting of Bush + Cheney (or Clinton-Gore), reptiloid aliens, Bigfoot, the Lochness monster, and the Democrats (or Republicans).
The godbots are next. It is divine smiting because the USA is overrun with gays, abortion, marijuana, and Democrats.