Few diseases are strictly bloodborne. Most, like hepatitis B and HIV, are also
transmitted through intimate contact. Bloodborne diseases are a risk only in
workplaces where workers can come into contact with blood or other bodily
fluids—most common in medical care delivery and laboratory work. It is also a
consideration for employees who provide first aid to other employees or
customers. Employers should be careful of hidden blood exposures. Ear
piercing in a department store can effectively spread HBV between customers
if the instruments are reused without sterilization.