Outbreaks at U.S. Colleges Force Sudden Changes and Send Students Scrambling: Covid-19 Live Updates

Here’s what you need to know: ImageStudents at North Carolina State University on Tuesday. The university will move all undergraduate classes online starting next week.Credit…Robert Willett/The News & Observer, via Associated Press U.S. universities have been trying to prepare for months, but outbreaks are forcing last-minute changes. As college students return to U.S. campuses, some…

What to Know About Stuttering

For a couple of minutes on Thursday, the sprawling, virtual Democratic National Convention seemed to hold its collective breath as 13-year-old Brayden Harrington of Concord, N.H., addressed the nation from his bedroom, occasionally stumbling on his words. “I’m a regular kid,” he said into a home camera, and a recent meeting with the candidate “made…

Detailed map of natural killer cells in COVID-19 patients expands understanding of innate immune response to SARS-CoV-2

A new study of 27 patients hospitalized with COVID-19 has provided a detailed map of natural killer (NK) cell responses to SARS-CoV-2 infection, revealing that specific characteristics of NK cell activation associate with different levels of disease severity. The findings are consistent with previous reports that NK cells exist in lower frequencies in the blood…