是的,24日正式開學.

https://www.thecrimson.com/article/2022/1/5/spring-semester-2022-announcement/

Cases have continued to surge on campus over winter break, even with most students gone for winter break. More than 610 affiliates have tested positive over the past seven days — a 5.07 percent positivity rate. Faculty, staff, and other Harvard affiliates make up the bulk of cases — over 68 percent of positive tests. Over 180 Harvard employees tested positive on Jan. 3, the first day after winter break for University staff.