Precautions against the possible spread of COVID-19 and monkeypox and polio

The CDC is expected to update its COVID-19 guidance for schools in the coming days. Meanwhile, the Biden administration has declared monkeypox a national health emergency. The New York Department of Health has issued a warning about the possible spread of polio. Dr. Jeremy Faust, an emergency physician at Brigham and Women’s Hospital, explains how Americans can protect themselves.