Whirling disease now infects about 150 streams across Montana, but researchers say they are still optimistic about the future of trout fishing in the state.
One of the most promising developments, they say, is the discovery of wild rainbow trout that are naturally resistant to whirling disease. Another is the mysterious rebound of rainbow trout in the Madison River, the first Montana river where whirling disease was discovered.
LINK (via:MSU News)