Students, faculty and staff wanting to participate in upcoming semesters must now be fully vaccinated against COVID-19 at Worcester schools the College of the Holy Cross, Clark University, and Worcester Polytechnic Institute. The three join Anna Maria College in Paxton, each of the state's public university campuses, including Fitchburg, Framingham and Worcester state universities, and MCPHS University, which has a campus in downtown Worcester. Community colleges, including Mount Wachusett Community College in Gardner and Quinsigamond Community College in Worcester have said they won't require vaccines, not wanting to worsen potential health inequities among members of its campuses. Clark President David Fithian made the announcement of the vaccine requirement on Thursday in a letter to the campus community, saying everyone had to show their proof of vaccination by July 15.