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As the U.S. grapples with surges of new COVID-19 infections, everyone is looking for ways to slow the spread of the disease. In this Badger Talks video, Professor of Population Health Sciences Ajay Sethi says that we should continue to turn to an old standby: masks. Wearing a mask helps prevent the distribution of tiny droplets from the mouth and nose that can carry the virus. Since many people who are infected with COVID-19 don’t know they’re sick, wearing a mask can help them avoid unwittingly