MIAMI - Vice President Mike Pence will visit the University of Miami on Monday and hold a roundtable with Coronavirus Task Force members to discuss progress of a coronavirus vaccine.Pence’s visit will mark the beginning of Phase 3 trials for a vaccine developed by the National Institutes of Health and Moderna Inc.The first of 30,000 planned volunteers will help to test the experimental vaccine on Monday, which is one of several candidates in the final stretch of the global vaccine race.Vice President Mike Pence speaks during a White House Coronavirus Task Force press briefing at the U.S.