-- There's so much heated speculation in this thread as to make all arguments worthless. What isn't speculation however, is that the international treaties against bio-weapons are a joke that can result in a global tragedy at any moment.
Bio-weapons are untraceable, one side can seed an infection in a way to frame another player, and all that could be done about it, would be heated but fruitless speculations. There's no point in arguing about "who's done it", actually that line of argument is a huge distraction causing a lot more harm than good.
Learn and argue about the dysfunctional internal and international bio-regulations, they are the reason for the uncertainty and lack of accountability which enable and invite truly global and truly disastrous villainy.