Researchers locked flu patients in a hotel with healthy adults — no one got sick

With an aggressive new strain spreading across the country, this year’s flu season has been marked by record-high hospitalizations and reportedly intense symptoms.

As people look for ways to contain the spread, new research has found that a few simple factors can greatly reduce transmission.

Researchers from the University of Maryland Schools of Public Health and Engineering in College Park and the School of Medicine in Baltimore studied influenza spread by placing flu-positive college...