Every fall the town develops football 'fever'. [=the town becomes very excited about football]
He has had a 'fever' for two days. = He has been running a 'fever' for two days.
New allegations brought interest in the scandal to a 'fever pitch'.
(..) Percy, could you shut up, give us a hand here? Hellraiser. DEL: You don't look so good. Look like you're running you a fever. COFFEY: Boss Edgecomb? I needs to see you down here, boss. I got things to tend to just now, John Coffey. You just... (..)1999 The Green Mile