well not to be off topicy but the thing that carries the most germs that you are in contact with alot is cash. got this from an article in the globe and mail
http://globeandmail.workopolis.com/servlet/News/qprinter/20010524/UCASHN
The study released yesterday is different from previous research in the field because it tried to measure the presence of bacteria on money circulating in the general community, rather than in hospitals, in this case Dayton, Ohio.
But it found high rates of bacteria on dollar bills. Seven per cent of the money showed traces of the more serious bacteria, 86 per cent harboured more mundane bugs, and only 7 per cent were germ-free.
Bacteria are not the only unusual substance that can be found on the money people handle daily. U.S. studies in recent years have shown that more than 90 per cent of money in circulation in big cities such as New York, Miami, Houston and San Francisco, carries traces of cocaine.
Wash your hands!
The bacteria found on grocery store money can be transmitted into our systems by our unwashed hands. While they don't pose much of a risk to the general public, they are a danger for the immune-compromised.
Klebsiella pneumoniae
Symptoms include pneumonia (characterized by emission of bloody sputum), chest pain, difficulty breathing, fever, and urinary tract infections.
Enterobacter
Causes opportunistic infections of the urinary and respiratory tract as well as other parts of the body.
Pseudomonas
Associated problems include urinary tract infections, respiratory system infections, dermatitis, soft tissue infections, bacteremia and a variety of systemic infections.
Streptococcus
Some strains cause sore and red throat, tonsilitis, high fever, headache, nausea, vomiting, malaise, rhinorrhea, and occasionally a rash. Other strains cause diarrhea, abdominal cramps, nausea, vomiting, fever, chills, and dizziness.
Staphylococcus aureus
Symptoms include nausea, vomiting, retching, abdominal cramping, and prostration. In some cases, headache, muscle cramping, and transient changes in blood pressure and pulse rate may occur.