A crash course in changing the world.
That his past could teach others a lesson in making better and good choices.
That no matter what he has done, others can learn from his mistakes, and make better choices. Then they won't ever have a bad past to look back on. Also, never ever use false information and you should remain calm.
I think Alchemy said something along these lines:
"With this EVOKE, you can be treated if need be and everything can return to normal. A panic will only create further chaos and we will not be able to help you. Some of he information you have been provided by the media is false. Please remain calm and cooperate with the people who try to help you, and everything will be alright."
I think he wants to help people be cured after what he's done in the past.
The past is gone and the future is ahead. Not to look at the past mistakes but how we will fix them.
I think he told them about the Evoke team and it's network. I also think he told them and the River Flu and how they could find out if they had it or not and where and how to get treated if they do have it.
Try to look for the real sources. Look very closely or you might not know you are getting the wrong information.
i think Alchemy said to the people that Evoke was there to help them and that they needed to now who was really sick with the flu and that not to panic Evoke only wants to help them.