Final answer:
Parenteral transmission refers to the transfer of pathogens through non-oral means, often via direct contact with infected blood, which can happen through activities like sharing needles or through transfusions.
Step-by-step explanation:
An example of parenteral transmission is transmission through direct contact with infected blood. This can occur in various ways, such as sharing needles during intravenous drug use, receiving contaminated blood transfusions, or health care workers being exposed via needlestick injuries. Another instance includes transmission from mother to child during pregnancy or childbirth, and also through breast milk.