My priest talked about this last week after a local person died of H1N1-related complications and people were concerned. When you commune, you consume nothing but Christ, so it's safe. If anyone is at risk it's the priest, who consumes whatever remains afterwards, regardless of what ends up in the chalice. How often do priests get sick, doing that every single week? He had a person at a former parish who had AIDS and communed regularly, and nothing ever happened.
I think the article in the original post is good. We have become so insulated from the gritty reality of life that we are afraid of everything - sickness, aging, death, etc. We can't hide from them. When these things inevitably happen, they should remind us of our mortality and spur us to keep doing better.