The Vaccines and Related Biological Products Advisory Committee (VRBPAC) is scheduled to meet on April 6 to discuss the potential use of COVID-19 vaccine booster dose. Both Pfizer (NYSE:PFE) and Moderna (Nasdaq:MRNA) are seeking to amend the emergency use authorization of their respective vaccines to allow for an additional booster.  Pfizer and its partner BioNTech SE (Nasdaq:BNTX)…