According to current Duke policy, masks are required for in-person classes whenever Durham county is considered “high level of community risk” according to CDC guidelines. When Duke policy requires, masks must be worn both in lecture and in section and this policy will be strictly enforced as we have immunocompromised students in class. When required, students should put on and wear masks as soon as they enter the classroom. Students not wearing their mask appropriately (including under the nose) before or during class will be gently reminded and then (if not corrected) asked to leave. Students may not eat in class but may drink water and other beverages as long as they take drinks quickly and recover their face immediately.