Chip,

I wouldn't be overly concerned. It should peak out if it has not already. It's probably post spawning stress coupled with rapidly warming temps. Bacteria has attacked your weakend fish due to bacteria flourishing in warmer waters.

If you do not have any other stressors you should be fine. Catch and release fishing at spawning time could be stressful too.

(I'm in northeastern Indiana)

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.