I am not going to get into the CITH versus COTT debate. I receive COTT for reasons of tradition, personal piety, and the possibility of unseen (not invisible, just unseen) particles. As for the latter, my close-up vision is not the best, and I could miss a particle. I don’t want that to happen. I also do not wish to be dabbing my palm with my tongue, if I did see a particle.
I would just say that no one
has to receive communion — unless it is the last opportunity in the year for them to make their Easter duty (I have actually been in that circumstance!) — aside from the priest. It is generally not understood, that one who is not impeded from receiving communion (by mortal sin or failure to fast) may simply decline to receive for any reason or no reason whatsoever, as long as the reason is not one of impiety (and even then, the sin would be in the impiety, not in the failure to receive). If there were an epidemic bad enough, I would be all in favor of not distributing communion at all. People would go nuts over this, no doubt, but it is a possibility — it violates nothing of the essence of the Mass. I don’t know if it is ever exercised in the Church in modern times.
“Lord, I’m sorry that I refused communion. You see, they wanted to place the Host in my hand! No way!”
“My child, it is your hands that do my work…”
“Well, we’ll just have to agree to disagree on that”
Our Lord would never condemn anyone who exercised the perfectly legitimate option of declining communion at a particular Mass. See my comments above.
If there is an epidemic bad enough, I would also favor cancelling all Masses. I’m not a huge fan of corralling hundreds of people together in an enclosed space during such things as flu epidemics.
Also, there is nothing that miraculously prevents the Eucharistic species from transmitting disease. The species retain all accidents of bread and wine, including the possibility of disease transmission. Again, if things are that bad, either limit communion to the priest only, or cancel Mass altogether.