Local officials sounded the alarm this weekend about a cluster of positive COVID-19 tests on Boston College’s campus, bringing promises from the school for more testing and contract tracing, but not plans to send students home. The incident is just the latest in a series of coronavirus clusters at local colleges that have prompted a range of responses from school administrations and sometimes concern from nearby residents. To discuss, Jim Braude was joined by Dr. Sandra Nelson, an infectious disease physician at Massachusetts General Hospital and assistant professor of medicine at Harvard Medical School, who has been providing guidance to the Baker administration on school reopening plans, and Dr. Michael Siegel, a professor at Boston University School of Public Health.