Before this gets out of hand, I don't want anyone to think I am attacking the OP. I understand this was a tramatic event, however it was a freak thing and the doctors were guessing at best what the cause was because they did not know.
It's not fair for the media of any type to start an unnessessary panic over something that is isolated so I am giving the other side of the coin, fair reporting if you may....
The fact of the matter is, if you are going to wear gloves in the tank, you also need to wear them anytime you use a public bathroom, or open a public door or phone, table, etc.
There are more germs in the public bathroom than you could ever even dream of picking up in your fish tank. In over 20 years of retail pet business, I never hear of a single person getting an infection from a fish tank. I have always had hang nails and other things and so did my dad, and neither one of us ever got infections from the tanks. My dad judged international fish competition and I don't recall hearing any stories in Broward County about hand infections.
Regardless, wearing gloves is not going to hurt anything unless it leaches something, but if you are going to wear gloves in the tank, you better bring them along with you when you leave the house too.