Deadly fish parasite forces Yellowstone River closure in Montana

Montana wildlife officials have closed a lengthy stretch of the Yellowstone River to all recreational activities at the height of the summer tourist season following the deaths of thousands of fish this week from a rare but virulent microbial parasite. The closure, imposed by the state Fish, Wildlife and Parks agency, covers more than 150 miles (240 km) of the Yellowstone River and its tributaries outside Yellowstone National Park. Fishing, boating and all other recreational activities are prohibited indefinitely.