A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated version of the virus, according to a report published this week in the New ...

Across the world, only a few dozen people appear to carry a genetic glitch that lets them brush off viruses that flatten ...

The N501Y mutation makes a virus more contagious. "All viruses have a receptor that allows them to stick to a cell, and that's the beginning of the infection process," Moore explained. "And in some ...

In space, bacteriophages mutate in ways not seen on Earth, making them more effective at killing drug-resistant bacteria.