Listen to the tape

You take the tape recorder in your hand and press the play button. It's a male voice:

"-o, no, no! This is bad, real bad! Look, I'm taping this recording for whomever might find this, the situation here is bad, REALLY fucking bad! The infected seem to have evolved, or mutated, or something, real rapidly over here. Their skin has tu-" the tape is garbled at this point, but cuts back after a few seconds, "-ey're like ghosts man! Coming out of the walls! The chlorine must've changed them somehow! It's game over for me! Game over! Get the hell outta' here bef-" "Fuuuuuck... pusssssiesssss..."

There's a scream, followed by several seconds of a struggle with more than one opponent, before the tape cuts out completely. That sure seems like some spooky stuff.