Several universities on the East Coast announced new policies over the weekend and Monday to head off the spread of the coronavirus, including virtual classes and curtailing campus gatherings.

Their measures came after major schools took steps to curb regional outbreaks on the West Coast. Last week, the University of Washington shifted entirely to online courses for its 50,000 students, and Stanford University announced that classes would not meet in person.

In New York, four universities followed suit over the weekend. Columbia University canceled classes Monday and Tuesday and said that classes would be taught remotely for the rest of the week. Hofstra University on Long Island and Yeshiva University in Manhattan announced that classes would be canceled for the week.

On Monday, two more schools announced similar measures. Princeton University said in a statement that it was requiring all lectures and seminars be held virtually, starting March 23, and that it would curtail large gatherings on campus. And Berklee College of Music in Boston announced that students traveling over spring break to certain states and countries would not be allowed on campus until after a 14-day self-quarantine.