My friend Deacon Bill Ditewig unpacks that question and others that are suddenly an issue during the pandemic:
The only minister who MUST receive Communion is the priest-presider, since it is he who is offering the sacrifice in persona Christi — and the sacrifice must be consumed. This, however, is a minimalist approach to the Eucharist. For many years, many people did not receive Communion at every Mass for a variety of reasons. It was Pope Pius X who encouraged a greater reception of Communion by the people; this effort continued and was emphasized at the Second Vatican Council, so that now nearly everyone receives Communion at every Mass they attend.
But what about the Deacon, especially in today’s situation? I think we would all agree that it is best if the assisting deacon were to receive Holy Communion. This is true on many levels, including the sign value of seeing the deacon receive. Now, how might that be done safely today? It seems to me that one legitimate option would be for both priest and deacon to receive by means of intinction, with the deacon then consuming the remaining Precious Blood and purifying the sacred vessels. I realize that other deacons and priests are using the more traditional (at least in the Latin Church) approach, but intinction seems to offer the safest method, in my opinion.
I used the expression “sign value” above, and I think that’s an important consideration. Our sacraments are public; they are, as the Baltimore Catechism used to have it: “outward signs instituted by Christ to give grace.” Part of the outward sign of the Eucharist is the ministry of the ordained, which should be exercised in as complete and fulsome way as possible.
But should a deacon even be serving during a livestreamed Mass?
Bill has some thoughts on that, too.