What is a fomite?

A fomite is defined as an inanimate object that can carry and transmit infectious agents through direct contact. This means that when a person touches a contaminated surface, such as a doorknob, countertop, or medical equipment, the microbes present on that surface can be transferred to their hands and potentially lead to infection if they then touch their face or an open wound.

The key aspect of fomites is that they are non-living objects, distinguishing them from biological vectors—like mosquitoes or ticks—that actively carry pathogens from one host to another. In the context of disease transmission, understanding fomites is crucial for implementing infection control measures, especially in healthcare settings where minimizing contact with contaminated surfaces can help reduce the spread of illness. Recognizing this characteristic helps in creating effective hygiene and sanitation strategies.