Diseased Bird: American Goldfinches Diseasesd

This year I have noticed a large uptick in sick American Goldfinches. They have gotten sick at a much high rate than I have seen ever. I have been cleaning my feeders daily or taking them down for a week or two at a time. I do not put up nyjer at all anymore.
The American Goldfinches keep showing up with Salmonella and then this one showed up with its eyes a mess.
It has been concerning and unusual.
2-3 House Finches have shown symptoms, but not a significant number. They show symptoms of salmonella.
As sick birds show up everything is taken down and cleaned.