If you're listening to this, that means that it all went wrong. We were able to contain the infection at first. Even able to study it.
My name is Dr. K Barrata Niktu and if you do as I say there may still be hope.
The most important thing that we know is that adolescents are immune to the effects. This means that, tho you are likely quite young, you are our only hope to cure the outbreak and save us all.

Spitting truth and vermouth in the booth
To give to the youth and keep sharp as a shark tooth
Fighting to the top but just because the roof has a beautiful view
Ruthless but true to a few
Who inject everything that they do
With the effort of Sisyphean Atlas last breath pedal backwards
Never a last word
Take it back just a little
See you trapped in the middle
Of a task and a riddle
With a trap in the rearview
You taking lead is something experimental
Time to flash a smile show your diamond cutter dentals
Monsters in the way but you've gotta blast right thru
Stand tall to obstacles and anything that fights you
Spent a lot of time
Wondering what you might do
It's time to take the chance
And find out what's inside you

Follow this map and stay hidden en route. While you can not be changed, the infected seem to have developed a sort of hive mind that has them focused on infecting those they can and enslaving the others.
Production began on a treatment but I don't know the volume made. Reach the factory and avoid capture, you must find it.

Gather your confidence compose your shoulders
Before you head out in this war zone a soldier
Armed with no weaponry but wits, will and your everything
That's what you need to save the world and get revelry
Hold your hand steadily
Always respond readily
If you get unsure
Sing yourself this melody
There is nothing too large
There is nothing too high
There is nothing too hard
That you can't even try
There is nothing too large
There is nothing too high
There is nothing too hard
That you can't even try
Never back down with your heart on your side
Always give your all
Never say die
There is nothing too large
There is nothing too high
There is nothing too hard
That you can't even try
Never back down with your heart on your side
Always give your all
Never say die

I fear we've not much time. You must begin following these directions now or all will be lost. You must be brave. You must believe you can succeed. You are the only hope.