imiloa, we should qualify one thing. My understanding is that a vaccine for a given flu strain can't be made until that bug actually exists and is identified. So, when the theoretical human to human strain does come up, THEN they can go about a specific vaccine, not before. Of course medications that ameliorate symptoms can continue to evolve, but the actual vaccine comes after the strain, not before. Please check with your friends on that. Anyone with knowledge on this please pipe in.