Lyric discussion by mister care-too-much 

"At first the fingers start to twitch The blood is set in commotion The feet start to beat Strange tattoos on the street A warmth floods fast (They grow wild) The devil's dived Inside their minds Everyone's on fire

Like mad dogs they slather Writhing and rabid Feverishly twisting A tragic display

Wrestling tremors Imprisoned in prisms Together in silence They desperatly pray

Ferocious, voracious Infectious, afflictions Convulsions, contortions Devour their victims

Heaven help me

A descent into savagery Plummeting rapidly They tried in vain to shake this terrible hex

With reckless abandon Belief was confounded By spiralling, spluttering, Quivering wrecks

Heaven help me

And we watched Them dance Themselves to death

Everyone's on fire

Heaven help me"

Sounds like an absolutely horrible way to die.