Communion wafers are so light I'd count them as 0. With regards to the 'wine', if you are Anglican you can take this by dipping your wafer in the wine rather than sipping it. People often do it when they have colds. (And before we get into the how can you catch a desease from the Host?' type argument, God made bacteria and viruses too).

If you are Roman Catholic I don't know what they do - (I thought only the priest drank the wine).