Fish-Killing Virus Spreading in the Great Lakes

New York Times: A virus that has already killed tens of thousands of fish in the eastern Great Lakes is spreading, scientists said, and now threatens almost two dozen aquatic species over a wide swath of the lakes and nearby waterways. The virus, a mutated pathogen not native to North America that causes hemorrhaging and organ failure, is not harmful to humans, even if they eat contaminated fish. But it is devastating to the ecosystem and so unfamiliar, experts said, that its full biological impact ...