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How fatigued certain activities make an older person feel can predict the likelihood death is less than three years away. Researchers show that perceived physical fatigability is an indicator of earlier mortality.

Researchers have identified the highly prevalent, specific mutations that are causing the Omicron variant's high rate of infection. The findings help explain how the new variant can escape pre-existing antibodies present in the human body, either from vaccination or naturally from a recent COVID-19 infection.

Of hospitalized children who tested or were presumed positive for SARS-CoV-2, 44 percent developed neurological symptoms, and these kids were more likely to require intensive care than their peers who didn't experience such symptoms, according to a new study.

New research shows that in natural vision, visual memory of images is affected by the size of the image on the retina. The findings can have many implications, including on the use of different types of electronic screens and the quality of information processing when we rely on large vs. small screens.